Malicious PDF — malware analysis report

Static analysis result for SHA-256 62df41267b8d5a86…

MALICIOUS

PDF

86.5 KB Created: 2021-02-23 10:08:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: a08e8d558a206b809bdd698ff821cba6 SHA-1: 8310ca099da42fb6b4e13bb004db8517afac217a SHA-256: 62df41267b8d5a861f9e24b09f7d32b5396f7508bbc921d80b94349f8d3c0428
264 Risk Score

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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.
  • 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://yafferge.ru/aws?utm_term=mrs+dalloway+quotes+about+death In PDF document text
    • https://nokaxogu.weebly.com/uploads/1/3/4/5/134520383/natatuf.pdfIn PDF document text
    • http://detobusukited.iblogger.org/balsamiq_free_mac.pdfIn PDF document text
    • https://jifofavara.weebly.com/uploads/1/3/4/6/134631997/mivanasino.pdfIn PDF document text
    • https://memuvarava.weebly.com/uploads/1/3/1/3/131384606/sowiduguki.pdfIn PDF document text
    • https://lobogisotu.weebly.com/uploads/1/3/4/8/134870795/nebumuvikobupavod.pdfIn PDF document text
    • https://teraxamexad.weebly.com/uploads/1/3/1/3/131380600/rilivakevap-suvon-rapawutifupeb.pdfIn PDF document text
    • https://rowiteruna.weebly.com/uploads/1/3/4/4/134470704/4359020.pdfIn PDF document text
    • https://minoximamus.weebly.com/uploads/1/3/1/4/131437876/fc6b9fc0c.pdfIn PDF document text
    • https://vojizozovogimum.weebly.com/uploads/1/3/0/7/130740342/jegogininufusekom.pdfIn PDF document text
    • https://mepifinifiwiza.weebly.com/uploads/1/3/4/3/134334375/67916252.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://divojeniro.epizy.com/book_of_lies_teri_terry_review.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/lubawewasapepopalali.pdfIn PDF document text
    • https://s3.amazonaws.com/mekonulegipero/wivunelalejuwikegavofa.pdfIn PDF document text
    • http://rabuxudizuxu.epizy.com/beatbox_app_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/bexuzowogegoj.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_off00010b53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B53 5380 bytes
SHA-256: 060d3de25da22df9b73e5abe8224fcf193262379d8175e95d9ec5999492eb83b
font_01_sfnt_off00011dac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DAC 16000 bytes
SHA-256: 5c2e40017c386cc32315d73e22d64c60d1a698b715413bef29ed2b19b8085d65

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