Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee072a0141379403…

MALICIOUS

PDF

69.9 KB Created: 2021-02-16 04:44:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 775cfdd809db295ccf9e160455e448a0 SHA-1: f7cbf9819ea96c95c2f2f067723775defdd6c747 SHA-256: ee072a0141379403c1c4880ac68af5c43fd92cea632fe90c1f8559a7c6f02009
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous external links, identified as a link farm, with the primary goal of directing users to malicious websites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. While no scripts were extracted, the presence of external links and the 'PDF_SEO_LINK_FARM' heuristic suggest an attempt to exploit users through deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://baarspo.ru/strik?utm_term=netgear+ex2700+n300+wifi+range+extender+price PDF link annotation
    • http://medgaj.com/retim_ilke_ve_yntemleri_kpss_km_sorular_2017svu1x.pdfIn PDF document text
    • https://wapojopaboxijok.weebly.com/uploads/1/3/4/7/134747084/79ad0bd7b48f.pdfIn PDF document text
    • https://cdn.sqhk.co/dusaradezat/KigOghy/92737871092.pdfIn PDF document text
    • http://padlamadla.site/205171551335kzyh.pdfIn PDF document text
    • http://sait-ok.ru/75597708398d8jcd.pdfIn PDF document text
    • https://jevezorubik.weebly.com/uploads/1/3/4/8/134864628/meladuxalusili_mobeluxa_welurowisiv_nesepomadarupe.pdfIn PDF document text
    • https://cdn.sqhk.co/loxusovi/gfgcigu/random_chat_anonymous_chat.pdfIn PDF document text
    • https://sevisexabokiro.weebly.com/uploads/1/3/1/6/131637038/e83654ab.pdfIn PDF document text
    • http://piguzipudoval.iblogger.org/womemekefawitojinel.pdfIn PDF document text
    • https://cdn.sqhk.co/bijilixiger/THvjaJl/xifojilelutetaxine.pdfIn PDF document text
    • https://cdn.sqhk.co/gixedomawa/jeEjakz/gepanesawikeb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xopugup/6680070048.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/91425711478.pdfIn PDF document text
    • https://s3.amazonaws.com/kujapomib/52493346207.pdfIn PDF document text
    • http://legopabez.rf.gd/tevedunudotifisotogama.pdfIn PDF document text
    • https://s3.amazonaws.com/dukavunivifa/augmented_operator_advisor_manual.pdfIn PDF document text
    • http://ganasoniledaw.rf.gd/73254699644.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/rmlau_online_registration_form_2019.pdfIn PDF document text
    • http://gumimuve.epizy.com/votopa.pdfIn PDF document text
    • 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d106.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD106 5760 bytes
SHA-256: 43fcd9eea621016c7839f522960d5b617765b7bc45062e3e43e3f20ba1da5a60
font_01_sfnt_off0000e4e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4E8 11332 bytes
SHA-256: 86c371c0328e74bb020d59649611b0d86cd7f164b7fd86b709d231adb8f5123c

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