Malicious PDF — malware analysis report

Static analysis result for SHA-256 242ea4f457ed44d2…

MALICIOUS

PDF

83.7 KB Created: 2021-07-06 11:52:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: d6511ea48867f0b8c65055ac78595b1f SHA-1: b1ace5f60a270cb9a13abc746154048507343240 SHA-256: 242ea4f457ed44d2dd4238ce3308a941ba8c337514fdd500baa00cf4303f045b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier, indicating malicious intent. It contains a link farm pointing to compromised WordPress upload directories, suggesting it's used to host or distribute malicious content. The presence of multiple distinct hosts and a high number of PDF links indicates a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9833

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://lushexperiences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160703d970a0e2---lotaxexokunejojefer.pdf In PDF document text
    • https://gbagencement.fr/uploads/file/46503049732.pdfIn PDF document text
    • https://rocksoliddesigns.biz/userfiles/file/52284420824.pdfIn PDF document text
    • https://robinio.de/wp-content/plugins/super-forms/uploads/php/files/n2mula1aq5gm155iss9spcggjv/16221413717.pdfIn PDF document text
    • https://heykidsletscook.info/wp-content/plugins/super-forms/uploads/php/files/426c2ec71475ee3d43bd04d5605e4af1/nerujoxud.pdfIn PDF document text
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160c164bed901a---62587887882.pdfIn PDF document text
    • http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609412401a374---67023601113.pdfIn PDF document text
    • https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/4001b67378f86895e40153f46d4cfb74/vaxinobokojirina.pdfIn PDF document text
    • https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/jdfomqlr1s0s8e555jup3btu1c/88843687112.pdfIn PDF document text
    • http://endustriyelkiralama.com/wp-content/plugins/super-forms/uploads/php/files/c01i9jl8jfo4mhkngtu46g7fq0/75694716645.pdfIn PDF document text
    • https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/02dabefc9d74db140944035bba66865b/fuxutinepanonav.pdfIn PDF document text
    • https://electrabicycles.pl/app/webroot/uploads/file/16201272912317.pdfIn PDF document text
    • https://angkoronetour.com/userfiles/file/22169709370.pdfIn PDF document text
    • http://perrymanreunion.com/clients/f/f8/f8644f0eb9578147d5589f75b8c3e300/File/tetekavavazezojekib.pdfIn PDF document text
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160934a8a28a07---wetapuzuki.pdfIn PDF document text
    • http://supermarketdv.ru/files/file/86703487638.pdfIn PDF document text
    • http://belgium-ex.com/images/blog//file/75062347465.pdfIn PDF document text
    • https://kodeac.com/wp-content/plugins/super-forms/uploads/php/files/bo48p86bc10e3buct5v5roprov/68212100361.pdfIn PDF document text
    • https://dipinkrishna.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f2a5b4770f---57660278736.pdfIn PDF document text
    • https://tusenfotingen.nu/anvandarbilder/108/files/57931516821.pdfIn PDF document text
    • https://sip7.pl/autoinstalator/sip7.online/wp-content/plugins/super-forms/uploads/php/files/5dbb0d6b3183be522844cc71e4139891/30748386417.pdfIn PDF document text
    • https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/9bbb09c9107b183261e4b5abbcf898f5/suwupagufer.pdfIn PDF document text
    • https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/e6999f677148690a3d438d0c6908582e/nalame.pdfIn PDF document text
    • https://www.isgs.org/wp-content/plugins/super-forms/uploads/php/files/4f1299f7e9ee7585c67e9f8dd352f4a4/dekugitafebokofeloritir.pdfIn PDF document text
    • http://high-keenltd.com/userfiles/file/67294062456.pdfIn PDF document text
    • http://jakpaisanestate.com/images/upload/files/94820340186.pdfIn PDF document text
    • https://kopari.hu/files/file/gogogep.pdfIn PDF document text
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/ef58g6voe1ft9aok0i25i1phm0/74042861421.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=star+sports+ownerPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5AB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fdc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDC2 10268 bytes
SHA-256: ab16971120987cf8d055a0b430190fdb3c15c681ff4c009699f90b08fe8baa45
font_02_sfnt_off0001150b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1150B 16900 bytes
SHA-256: b72b8aefc9c38caac2f40298b44557d2f634da7cdae61d092d77aee65b770661

Open this report in the interactive analyzer, or submit your own file for analysis.