Malicious PDF — malware analysis report

Static analysis result for SHA-256 22e0de19aabe7c67…

MALICIOUS

PDF

85.3 KB Created: 2021-07-18 07:52:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 8a261f62240523cd934a30d4aecfdfb4 SHA-1: b0a9535b658709a4da17cfa75469704ea572aa6f SHA-256: 22e0de19aabe7c67edc405b7fe5824606955570ea9d502a94cdfb5ee0e226fa4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains a link farm pointing to numerous URLs, many of which are hosted on compromised CMS platforms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for SEO poisoning or to distribute further malware. The presence of multiple PDF link farm heuristics reinforces this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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 https://tasleemdubai.com/userfiles/files/98012781867.pdf In PDF document text
    • http://aydinservis.com/ckfinder/userfiles/files/77417544946.pdfIn PDF document text
    • http://esoftland.com/userfiles/file/85826290027.pdfIn PDF document text
    • http://paradisetourkorea.com/FileData/ckfinder/files/20210623_869F233C2EAA84FD.pdfIn PDF document text
    • http://suncitygroup.ir/basefile/suncitygroupir/files/kuxesodobedal.pdfIn PDF document text
    • https://www.straightmyteeth.com/wp-content/plugins/super-forms/uploads/php/files/3bf33c52cebbd319f071ffb4b93ce513/89733537009.pdfIn PDF document text
    • https://pasarangroup1.com/contents//files/33130122098.pdfIn PDF document text
    • https://mojer.bg/files/vadukapamesareti.pdfIn PDF document text
    • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/ed182ab76fb740b2c71432d263f07dea/82961736505.pdfIn PDF document text
    • https://weilaimachinery.com/userfiles/files/29399520793.pdfIn PDF document text
    • http://tokyosushilohaus.com/uploads/files/tanevesorivozezodujoro.pdfIn PDF document text
    • http://www.kindytennis.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f87165e796---96377305591.pdfIn PDF document text
    • http://tycoonmedical.com/userfiles/file/49879727433.pdfIn PDF document text
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160aae891ea627---74266763883.pdfIn PDF document text
    • https://dezsredstvompx.ru/wp-content/plugins/super-forms/uploads/php/files/c21727cef45a6b66f7b475547987f22a/90434273023.pdfIn PDF document text
    • https://olmitek.by/wp-content/plugins/super-forms/uploads/php/files/eg41jn8o09s1karlk7umppct61/porikebupo.pdfIn PDF document text
    • https://amrapalispot.com/userfiles/file/49184705163.pdfIn PDF document text
    • http://www.thediethub.in/wp-content/plugins/formcraft/file-upload/server/content/files/160c903f7dfc42---36250466908.pdfIn PDF document text
    • https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/b2c289614573a47cb4490fd722976bd9/digofoxoxavekabe.pdfIn PDF document text
    • http://movitecnic.fr/ressource/site-image/files/40617016938.pdfIn PDF document text
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160b9e507f3a74---voraluxamabisa.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/1d639cb6ffc9a04dfaf2b3f5f9c6cf70/gokiv.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=scorpio+sign+meaningPDF 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_off0000edd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD8 10648 bytes
SHA-256: 8ed29de55450784f87a126f602a7c0301a94c069ad4b6df97b1db7416659c0d0
font_01_sfnt_off00010621.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10621 16336 bytes
SHA-256: 6585b20460669cb47d6478227aeddb5f785cc1dedac9399a8112a1fba95451cd
font_02_sfnt_off00013066.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13066 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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