Malicious PDF — malware analysis report

Static analysis result for SHA-256 de381831909127b7…

MALICIOUS

PDF

71.2 KB Created: 2021-01-04 20:00:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 49a4446bc7a513adca30fde61b429d24 SHA-1: e9cf9cfec056d6bcfdb07fdbf7eefd4140730fb5 SHA-256: de381831909127b745b0a62ef3dd36910943dbaccfe45ca1ec9166df5b9cc657
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution attempt. It contains a large number of external links, many of which are likely part of a link farm designed to direct users to malicious sites, such as the one found at https://trafftec.ru/aws?utm_term=balidan+odia+movie+song+free. The document body is heavily obfuscated and appears to be a lure related to free movie songs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://trafftec.ru/aws?utm_term=balidan+odia+movie+song+free PDF link annotation
    • https://kosazuritejozu.weebly.com/uploads/1/3/0/8/130874521/f43b17f4f91de9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369143/normal_5fe24571d34f7.pdfIn PDF document text
    • https://cdn.sqhk.co/dapubebireba/dgjgcf2/download_game_clan_race_mod_apk.pdfIn PDF document text
    • https://sitoluvumoroge.weebly.com/uploads/1/3/4/7/134762666/a63745283.pdfIn PDF document text
    • https://gijepeparo.weebly.com/uploads/1/3/4/3/134318767/8082310.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/15574935-06e4-4f0e-b835-3738622a7413/super_smash_melee_emulator_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19d486f0-b3c6-4323-b421-547ae6eaff79/forge_of_empires_pc_hack_no_survey_on_pc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3aafc1a-d3cf-4c69-b465-c897bcd16283/515093082.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/174f9b13-fab2-4780-9563-9ce335f81022/83172973910.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1e82817-caed-4e62-a608-e6136b65d3a5/poduxutuvexosegujeje.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_off0000d89a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD89A 5336 bytes
SHA-256: 1c6faa667edc9f56dd4d4f634d2e97dccd91410b9440fb0ec2a6e6e23ba80671
font_01_sfnt_off0000eab3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAB3 11200 bytes
SHA-256: 8a577cdf076bf17d13b9bbb000fdc500252a0855683c556863fb7c8f1fafa649

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