Malicious PDF — malware analysis report

Static analysis result for SHA-256 7502af518c7e516e…

MALICIOUS

PDF

105.0 KB Created: 2021-02-21 13:27:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 481ff1c1a5970bb89512f9cda8f242d9 SHA-1: 97a167553be580469439e7db18a1587a772c23a2 SHA-256: 7502af518c7e516eda174b2362a176d5c37081345a71b5e7b352d7c97c603ea4
126 Risk Score

Malware Insights

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

The PDF contains numerous external links, many hosted on disposable domains, and is flagged by ML and ClamAV as malicious. The presence of embedded URLs and the heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicate a strong likelihood of phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded content suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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 https://seumenha.ru/strik?utm_term=what+type+of+therapy+is+family+systems+theory PDF link annotation
    • https://zoveponezewuda.weebly.com/uploads/1/3/0/7/130738822/2623755.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377656/normal_600ced8a9de8c.pdfIn PDF document text
    • https://dugegedop.weebly.com/uploads/1/3/4/3/134338267/piwalefoxine.pdfIn PDF document text
    • http://gexisefi.iblogger.org/54216674668.pdfIn PDF document text
    • https://xepapure.weebly.com/uploads/1/3/4/3/134367208/suvavuxigiwuzegoxisu.pdfIn PDF document text
    • http://madewithsunshine.com/little_panda_farm_story_mod_apk_unlimited_money1ab4m.pdfIn PDF document text
    • http://dirujadejefogax.iblogger.org/velapogosoletidojufu.pdfIn PDF document text
    • http://good-production20.site/romantic_tik_tok_videos_for_statusrz51t.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453328/normal_601f995ed3a36.pdfIn PDF document text
    • https://marikiwow.weebly.com/uploads/1/3/1/3/131379510/sokodase-durubuxakixawe-gijuta-dogapaxara.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471995/normal_5fff6a7f2e6d3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zitejilid.epizy.com/93850510168.pdfIn PDF document text
    • http://bilunijo.epizy.com/vosuxepufamomebilef.pdfIn PDF document text
    • http://jibujopebobusa.rf.gd/koxevoramikinilojanasume.pdfIn PDF document text
    • http://boxulinizisa.epizy.com/batobimewo.pdfIn PDF document text
    • http://zapuvem.epizy.com/bejapewabebo.pdfIn PDF document text
    • http://zerujafulo.rf.gd/early_childhood_education_ielts_answer.pdfIn PDF document text
    • http://roradom.epizy.com/tusigutomiludawuje.pdfIn PDF document text
    • http://wubexemetaxoru.epizy.com/printable_blank_calendar_template_2019.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_off00015efa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15EFA 5256 bytes
SHA-256: bd14dccbfe07f71c85545bd5ab02200523c7e2453387ad710e83e2eef0a4a68a
font_01_sfnt_off000170c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x170C9 11108 bytes
SHA-256: 8ca2937e5a7a9cadd407a0e32d57a26584113e2c4d840a675b737e83dae86e5d

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