Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ed52b51aafedc41…

MALICIOUS

PDF

76.7 KB Created: 2021-03-09 09:26:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 67b4b1e573d8eb048043255b82e47875 SHA-1: 283e44bf1e04d33da4842a6cd817e17bbe239975 SHA-256: 2ed52b51aafedc4140d9b653d734f15fcba894654f9557649cb188e94ce79ed7
186 Risk Score

Malware Insights

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

The PDF document contains numerous external links, forming a link farm, and is flagged by ML classifiers and ClamAV as malicious. The document body, though heavily obfuscated, suggests a lure related to 'eminem download video'. The presence of multiple external URLs indicates an attempt to redirect the user to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • 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.
  • 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://ponafet.ru/wix?keyword=eminem+download+video PDF link annotation
    • http://xavelodezazil.iblogger.org/bethusile_mcinga_new_album_free.pdfIn PDF document text
    • https://tixanesel.weebly.com/uploads/1/3/4/2/134234664/1cdff038fa14084.pdfIn PDF document text
    • https://luludosob.weebly.com/uploads/1/3/4/7/134703274/4597079.pdfIn PDF document text
    • http://static-start.top/sirolopawoxupogedxvgy.pdfIn PDF document text
    • https://bitepurumuxuz.weebly.com/uploads/1/3/1/3/131378930/4234769.pdfIn PDF document text
    • http://verenica.net/why_are_the_two_strands_of_dna_called_antiparallel19f4d.pdfIn PDF document text
    • https://folarudivol.weebly.com/uploads/1/3/1/8/131871739/4350125.pdfIn PDF document text
    • http://civiliscmq.online/husqvarna_yth_150_parts_diagramfpi1b.pdfIn PDF document text
    • http://dazemuwemez.22web.org/dirty_old_town_sheet_music.pdfIn PDF document text
    • http://masovizifuzaro.iblogger.org/home_loan_emi_calculator_excel_sheet.pdfIn PDF document text
    • https://ritipovilij.weebly.com/uploads/1/3/4/6/134650849/wozeribikesimajul.pdfIn PDF document text
    • https://ribelogexarov.weebly.com/uploads/1/3/4/5/134500322/854540.pdfIn PDF document text
    • https://volifaredibeg.weebly.com/uploads/1/3/1/4/131437601/8106499.pdfIn PDF document text
    • https://juputifewusa.weebly.com/uploads/1/3/4/4/134435955/3443097.pdfIn PDF document text
    • https://zoxujaratufopa.weebly.com/uploads/1/3/5/3/135399722/bepidokodiwiveza.pdfIn PDF document text
    • http://natur-bio.space/10457472057vjdzq.pdfIn PDF document text
    • https://fabirakarag.weebly.com/uploads/1/3/2/7/132710689/1f563844b59.pdfIn PDF document text
    • https://fasuwilobavofe.weebly.com/uploads/1/3/4/4/134489762/tozemimabifufu.pdfIn PDF document text
    • http://bogaxusamukuxid.22web.org/duzikopefi.pdfIn PDF document text
    • https://wofexajolevesi.weebly.com/uploads/1/3/5/3/135302186/sawipimimiwo.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/wixanarer/36050303980.pdfIn PDF document text
    • https://s3.amazonaws.com/feliso/spanish_phrases_with_english_translation.pdfIn PDF document text
    • http://gexegufikide.epizy.com/sabutedu.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_off0000f2ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2BA 4808 bytes
SHA-256: 7adfc7030400ba6567388ad0cdb57b3a7109c13b68508d6f3b9b48a7184eb3ff
font_01_sfnt_off00010318.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10318 10116 bytes
SHA-256: 3817b524f7a953c1f8d32f750aa7aa530709f26460eb7e8139a9038d624d2827

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