Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ea67b8ff8c097c4…

MALICIOUS

PDF

78.7 KB Created: 2021-08-13 18:01:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: aa84f984878bf53f6bcb5b21a6dc4845 SHA-1: ed49248c2588d32c52f211a6f65113adb0ba1b05 SHA-256: 9ea67b8ff8c097c4329fca8f337d2d2cb6ac09c63055a83a90a4dcbc354bcd45
156 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating it's a phishing or trojan PDF. Heuristics indicate it functions as a link farm, directing users to potentially compromised websites or disposable hosting. The presence of external URIs and link farms suggests an attempt to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/49ca23270d030bca531523be2a4f504c/20814289293.pdf In PDF document text
    • http://brezov-gaj.si/uporabnik/file/zexolo.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/8487819dd9bd88a3d4f70350db0814cd/punexabi.pdfIn PDF document text
    • http://sameiroeventos.pt/ficheiros/tuvixetov.pdfIn PDF document text
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c9680476f9e---85378694338.pdfIn PDF document text
    • https://ibextrail.com/editor-images/gowuzowesojogevu.pdfIn PDF document text
    • https://wilsonbarrera.com/inicio/wp-content/plugins/formcraft/file-upload/server/content/files/1607169dfdc264---pomilofiwusagoni.pdfIn PDF document text
    • http://ptairsupply.com/userfiles/file/dewuwejanugefidilinaduf.pdfIn PDF document text
    • https://www.gasserbush.com/wp-content/plugins/super-forms/uploads/php/files/d15094b1009b11cd5f2fcd74a310993e/faxaxubuwekaxilusobum.pdfIn PDF document text
    • http://reutlinger.pl/userfiles/file/11397616361.pdfIn PDF document text
    • https://propertiproperty.com/Uploads/userfiles/files/33587129205.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608dab414eed5---babug.pdfIn PDF document text
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/51e045ielvrbm0kkh58sefnoae/wagudabezijomid.pdfIn PDF document text
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/160831ba109ad3---9354560316.pdfIn PDF document text
    • https://apsco.ly/userfiles/files/15364101115.pdfIn PDF document text
    • http://123podkrovie.sk/editor_uploads/files/zenojase.pdfIn PDF document text
    • https://www.pessin-location.fr/ckfinder/userfiles/files/90556874834.pdfIn PDF document text
    • http://optimus.org.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607e1cacedf1a---nuzarukipolataritafo.pdfIn PDF document text
    • http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608eb8334b415---19267246172.pdfIn PDF document text
    • https://doan295doson.vn/namthuan/images/news/files/48911626645.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/2f1b1837a02dc470a11209092242eb77/61136794586.pdfIn PDF document text
    • https://www.sanier.pl/wp-content/plugins/super-forms/uploads/php/files/9olp5a8n1hjp4k3dt8q4pfvqhn/bikuzakalanunuwupudiga.pdfIn PDF document text
    • http://alituncer.com/userfiles/file/lemovero.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=raynor+garage+door+opener+remote+893rgxPDF 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_off0000ce81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE81 11240 bytes
SHA-256: 1da9280f745267aeacef474dbd70e4b845b0c7e0fe96dba14dd7ce30af1b44d5
font_01_sfnt_off0000e8be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8BE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000100d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100D0 16056 bytes
SHA-256: 59de2a5cb2c643b1f9146aa02cd0dc5859bb8f63d0e4a6cc97af746834eb3ea0

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