Malicious PDF — malware analysis report

Static analysis result for SHA-256 46527d26f08233c7…

MALICIOUS

PDF

78.2 KB Created: 2021-03-20 15:56:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 9acf0d96406b2441142a2cd9c13a1ef1 SHA-1: dcec584953cd0e9baa5643e3c87133389f037c3e SHA-256: 46527d26f08233c7032646d49f7b6512770f6a8a419226b9651446367315d135
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://vilenefex.ru/wix?keyword=exveemon+next+order PDF link annotation
    • http://mokugujumekov.sportsontheweb.net/petuwepeziruregaki.pdfIn PDF document text
    • https://turamidiwirak.weebly.com/uploads/1/3/4/3/134340523/8e0df2f6.pdfIn PDF document text
    • http://walawatomu.mywebcommunity.org/66881413383.pdfIn PDF document text
    • http://datujizid.iblogger.org/86964546163.pdfIn PDF document text
    • http://xemizawufogutuf.scienceontheweb.net/10206193671.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425487/normal_603948a492d8a.pdfIn PDF document text
    • https://sewemojokevapu.weebly.com/uploads/1/3/4/4/134463988/matosajerinojuk-tijilive-nomufelirozate.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485930/normal_5ff0eb93cea27.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418972/normal_60004addee219.pdfIn PDF document text
    • http://jinobuzid.scienceontheweb.net/36424669181.pdfIn PDF document text
    • http://zugipipekuf.22web.org/bufoju.pdfIn PDF document text
    • http://vevapefin.sportsontheweb.net/visowuzije.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://buluzapatevade.epizy.com/mumavapa.pdfIn PDF document text
    • http://mulotuzasokafo.epizy.com/what_is_c-flex_on_a_cpap_machine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a2cb69d-6e80-4059-97a0-1b393f0821a8/japiwusitemakutafapumi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd5a3acc-ab2e-473b-bf52-80d5e608cb9e/how_much_does_a_mcdonalds_employee_make_in_australia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/916cfc7e-716b-439a-bf9c-7379593d5d2f/how_to_log_into_my_facebook_page.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b4085d3-33d2-4890-86f7-a1bcb36f9de3/39280399185.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1875e084-cea6-4ac0-ba20-6c18fd6fc328/76664550092.pdfIn PDF document text
    • http://gajibapudi.rf.gd/getajedigixepowe.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_off0000f3fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3FB 4636 bytes
SHA-256: c5337c6ad1e605d7ba508f8a210b8845035740187780f59fb8d9c264ca4fedb5
font_01_sfnt_off000103b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103B0 11856 bytes
SHA-256: 393298b47156f0faed58f8511433b87b926870131c8c63fef9bd3f423f2031b1

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