Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f47a14f95d877c2…

MALICIOUS

PDF

74.8 KB Created: 2021-02-02 22:41:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: de9a17a41064e324a288da6bb334381a SHA-1: 2e9166996e98b1b174aa61453aaf051203c50a11 SHA-256: 6f47a14f95d877c2e10c037e9328102898800133aa0777d43755ebfe54889768
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a significant number of external links, many hosted on disposable domains, indicating a link farm or SEO manipulation tactic. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a malicious workflow designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://maypoin.ru/aws?utm_term=affairs+cloud+daily+current+affairs+pdf PDF link annotation
    • https://kezunegewekal.weebly.com/uploads/1/3/1/4/131483031/8e62e11e74.pdfIn PDF document text
    • https://cdn.sqhk.co/dijogiper/jgiaghX/62104724342.pdfIn PDF document text
    • https://cdn.sqhk.co/fedijadika/fyDjfjj/hobby_lobby_stores_in_ct.pdfIn PDF document text
    • https://moxusovilala.weebly.com/uploads/1/3/0/7/130738705/bikeviwufag.pdfIn PDF document text
    • https://cdn.sqhk.co/xisalaximel/jiipCOR/xegiwoneto.pdfIn PDF document text
    • https://tabogivazosepa.weebly.com/uploads/1/3/1/8/131871767/vepozegokamep.pdfIn PDF document text
    • https://cdn.sqhk.co/fabunavaxa/TxMjet7/92899726899.pdfIn PDF document text
    • https://cdn.sqhk.co/gedadixugud/ciaDieo/80779248140.pdfIn PDF document text
    • https://cdn.sqhk.co/budajawisore/23m0Sjc/my_story_maker_edu_teacher.pdfIn PDF document text
    • https://setupazaz.weebly.com/uploads/1/3/4/7/134772318/sajofidekam.pdfIn PDF document text
    • https://verikadofaja.weebly.com/uploads/1/3/2/3/132303102/3700268.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sejofedavija.epizy.com/focus_group_discussion_guidelines.pdfIn PDF document text
    • http://pimibini.epizy.com/alcatel_2008g_mobile_phone_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/bitdefender_antivirus_for_mac.pdfIn PDF document text
    • http://mijikudetixo.epizy.com/newixuwe.pdfIn PDF document text
    • http://ruzizasasasami.rf.gd/atg_endeca_interview_questions_and_answers.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4DE 5240 bytes
SHA-256: 1035148f617179e82e15b6e0da811ca513c8a2b2a9c8f053c1218b636eb2cd2e
font_01_sfnt_off0000f6d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6D0 11480 bytes
SHA-256: 29e5f95b891093c331bd2b90c94a33bad39b0eefa43f37db12b4023f23eb8f93

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