Malicious PDF — malware analysis report

Static analysis result for SHA-256 9135a367841a1774…

MALICIOUS

PDF

69.3 KB Created: 2020-12-31 13:33:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: fb692ad125a17e3fc37e60ebc775aa9b SHA-1: 6658c9d56ff864603d8276608a9c2e6399267065 SHA-256: 9135a367841a17748bcd58ab17d6ffe7fec115929d4d78723ad505a51f052b90
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9997

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 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.
  • 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://trafffi.ru/strik?utm_term=download+game+counter+terrorist+sniper+shoot+mod PDF link annotation
    • https://xexogabowagub.weebly.com/uploads/1/3/4/4/134438270/xogivinenur.pdfIn PDF document text
    • https://nokesopupikes.weebly.com/uploads/1/3/4/7/134767934/7288503.pdfIn PDF document text
    • https://fisalusul.weebly.com/uploads/1/3/4/3/134341538/faxideravo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459792/normal_5fe97326ce689.pdfIn PDF document text
    • https://satupagewamikim.weebly.com/uploads/1/3/4/5/134584558/sejojugad.pdfIn PDF document text
    • https://misodewegakev.weebly.com/uploads/1/3/4/7/134717908/5077328.pdfIn PDF document text
    • https://cdn.sqhk.co/vegubefeno/Iih5jib/90_s_pop_music_female_artists.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/zidosozawok/percy_critical_role_character_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da10eb48-1f91-4500-bd0a-074caf0f0d94/tiwabufi.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/6969089612.pdfIn PDF document text
    • https://s3.amazonaws.com/rewepalazamiso/rudaxapipukedekerepazelar.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/intranet_vs_extranet.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/95213226866.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47fb54b8-8b97-4dbd-a21a-25db660bd7f6/vemusalajunolake.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_off0000d247.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD247 5576 bytes
SHA-256: ef0c6801edbcabe2e17784137b354316f370dadbca3b25bbadd58bec7bbec756
font_01_sfnt_off0000e52a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE52A 10280 bytes
SHA-256: f6b64c5aca8bbaf250906a5d73c2c20962319ac067e821129ce7831903def3ea

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