Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9af157af926b229…

MALICIOUS

PDF

88.8 KB Created: 2021-06-27 18:12:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 9ff8a485aa65fbf302f7e147407b42c3 SHA-1: 028fcdf7a8d9294efa4c5984d55cf2323a546e2c SHA-256: c9af157af926b2298b6819f5a8eac25d0fac40177bfc6f4c22a296345daa6570
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, containing numerous URLs pointing to compromised CMS uploads and disposable hosting, likely intended to redirect users to malicious content. The presence of multiple external URIs and link farm heuristics strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607a9d840ad1c---mudowubadexenawipivudev.pdf In PDF document text
    • http://archerelectricsupply.com/userfiles/file/rulerusijaxosavor.pdfIn PDF document text
    • https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b872e8e5871---lelisizalok.pdfIn PDF document text
    • http://mt-filtration.com/uploaded/file/100895146160c888a20ec11.pdfIn PDF document text
    • http://videoacceso.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607209cf5106c---kobaxixaporojarutasi.pdfIn PDF document text
    • http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/q7h4haboumf3ra5k937udfbnn2/87801623841.pdfIn PDF document text
    • https://olmitek.by/wp-content/plugins/super-forms/uploads/php/files/8q6uvtvas69fuiegsodo3kfef2/31059063327.pdfIn PDF document text
    • https://annjulieskarpmo.com/userfiles/file/39364900505.pdfIn PDF document text
    • http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/n4i558ikm2ph73vkkr5ff1ck92/bujaner.pdfIn PDF document text
    • https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/d23a2c1b7b6f4f6f5f8c130c5dcee499/metipotev.pdfIn PDF document text
    • https://riondene.ch/img/uploads/file/94862645478.pdfIn PDF document text
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/j1nbm8uabt5mef6028ct1opq27/kobiwon.pdfIn PDF document text
    • https://www.myjamaicais.com/wp-content/plugins/super-forms/uploads/php/files/2c6b0cb5e1300b238414f7f3a063efe6/29164296784.pdfIn PDF document text
    • http://pericosrentcar.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160836f77bf016---wasopiresafexanunepina.pdfIn PDF document text
    • https://www.arphplumbing.co.uk/wp-content/plugins/super-forms/uploads/php/files/1jot5rgtmh991vro2oue2b2sek/segapuwojajujazoxobi.pdfIn PDF document text
    • https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/990f7f3b27feb669d1f025d8e5321fc1/bigabazefejofotajeted.pdfIn PDF document text
    • https://personalloan2u.com/wp-content/plugins/super-forms/uploads/php/files/b3c57049801ffd0f25f74b3aedc589e7/gerupudowuzuve.pdfIn PDF document text
    • https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/ac4f0be5ebba7607611f39e8ef617941/pofixetedufofolozux.pdfIn PDF document text
    • http://gptools.net/userfiles/file/nemijodofopuzozajomejupam.pdfIn PDF document text
    • http://altiro.nl/home/tjerk/file/satujowofezof.pdfIn PDF document text
    • https://angkortaxiservice.com/userfiles/file/15834373227.pdfIn PDF document text
    • http://peneleos.pl/userfiles/file/tizebijeretezojakomiku.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/44d451f1bb3abc7bd4948486ea031a22/66197915415.pdfIn PDF document text
    • http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ef7887b2e6---welafakokoludokusipipu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=wrong+turn+3+part+full+moviePDF 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_off0000f858.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF858 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001106f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1106F 10864 bytes
SHA-256: 46721b41443452e23e8f6aefe10e2c00d921507f77568518fb59d50640478413
font_02_sfnt_off00012999.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12999 17152 bytes
SHA-256: 639a73f4ce3f941f1c772e99d15ce0db12a7f6aec61646a18cc2ab565753da21

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