Malicious PDF — malware analysis report

Static analysis result for SHA-256 974606aca0f8039f…

MALICIOUS

PDF

85.1 KB Created: 2021-06-26 22:55:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 0194516370e34fc6629c715d4c27156a SHA-1: b74178729db770f2ef2afcdf7d36d26597c423c1 SHA-256: 974606aca0f8039f966bb017589d2ece8444fd99857150c45549ba431afd6dd5
156 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains numerous links pointing to compromised WordPress sites and other domains, suggesting a link farm designed to redirect users to malicious content. The presence of these links indicates an attempt to lead users to phishing pages or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://robinsonfamilyreunion2021.com/clients/7/77/7769cd5c98d63cfb9738ae2db1c5c42c/File/5694020892.pdf
    • https://www.urban-quartz.co.uk/wp-content/plugins/super-forms/uploads/php/files/6371e70ee89dca13ad4b883153420a03/jubeze.pdf
    • https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160913c5d77a20---batefixibenalajerizutale.pdf
    • https://www.acetechnology.co.in/wp-content/plugins/super-forms/uploads/php/files/4b47nclgp3cjv43d1jk5lfv26p/lijanijom.pdf
    • http://andlupa.com/userfiles/file/88079148455.pdf
    • http://www.makattakasinti.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076375bb9ff1---mowebozekudowon.pdf
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/16086badfd28fc---jotowetupudukadavuvej.pdf
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098a299cfe84---zomud.pdf
    • https://cashmeredreams.com/wp-content/plugins/super-forms/uploads/php/files/40a8b9c28234f5298c523b8ec5fa3f23/munifek.pdf
    • http://aiswaryamatrimonials.com/fck_uploads/file/bobojalopepebonagavevujej.pdf
    • http://esebtekstil.com/resimler/files/xorodegiti.pdf
    • https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/56a80b82194c7ebf27128f4d7167f090/lumoteviwalelizowivuv.pdf
    • http://reicar.dk/userfiles/file/42151524557.pdf
    • http://urbanconstructions.org/images/uploadedimages/file/bolavaparesidulonoxodeje.pdf
    • https://movesforfree.com/wp-content/plugins/super-forms/uploads/php/files/93gro4nf1u280a81mu142simv5/kagijetegilitiritexinaz.pdf
    • http://agendatourvietnam.com/hinhanh/file/50296320332.pdf
    • https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/44eec7b3e29e6c5e5dc89cf4f3bd1e7c/dasefuf.pdf
    • http://beiwendq.com/userfiles/file/ponulomelavawejirinixi.pdf
    • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d929e7bbb1---24613116612.pdf
    • https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/9169d372eb7100e15baeab0b0e645c9d/44924062908.pdf
    • http://kielcenoca.pl/files/file/22216282395.pdf
    • https://lemanssrl.it/file/69261538099.pdf
    • http://nnk.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1607ec433d592b---2980481782.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=western+star+owners+manual
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e93d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE93D 16792 bytes
font_01_sfnt_off00010154.bin
27ff3821fc62095ab0ebcc8509c5b54a1fa8b338aaec326c2dcbb9acde4ce030
pdf-font-stream PDF embedded font (sfnt) at offset 0x10154 10356 bytes
font_02_sfnt_off000118cf.bin
b7e7cdd3ffbddfaede0f5a237d8ee372d0a9910207e7bdf5d4b3c7dadc12fb49
pdf-font-stream PDF embedded font (sfnt) at offset 0x118CF 17052 bytes