Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c9b0b67876780dc…

MALICIOUS

PDF

172.3 KB Created: 2021-03-19 14:24:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: cf8c6b0bb214b9a6cf104947a48e6319 SHA-1: 9c55c09dad8227f958397d7a25ac570e2f0cecd2 SHA-256: 0c9b0b67876780dcf51b097e84563f62d20cac8e2566913f2416a025ffbfe473
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 0.9997

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 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://kuzutuzo.ru/wix?keyword=neon+genesis+evangelion+tv+14+years+old PDF link annotation
    • https://bumiwawewa.weebly.com/uploads/1/3/5/3/135343946/8138394.pdfIn PDF document text
    • http://kafalukuwemi.mygamesonline.org/nowutajexokabubix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479226/normal_5fea05e971ddf.pdfIn PDF document text
    • https://cdn.sqhk.co/gepeduvo/jijg7ic/vexawibozubidilipojasa.pdfIn PDF document text
    • https://zefinefan.weebly.com/uploads/1/3/2/8/132816158/jebojeta-sorewazid-mobuxorapog-rutiz.pdfIn PDF document text
    • https://cdn.sqhk.co/sepagumal/hgjouSc/23375118518.pdfIn PDF document text
    • https://cdn.sqhk.co/gopilufifeda/dVijj0g/hideki_tojo_apush_definition.pdfIn PDF document text
    • http://bajifepeselok.sportsontheweb.net/22766454621.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484118/normal_5fee0b17505c2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zowofiz.myartsonline.com/what_model_is_my_smith_and_wesson_38_special.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75b6a075-ffaf-4ded-ad17-71de13264701/76721228511.pdfIn PDF document text
    • https://4ac36a2f-1533-488b-b282-cf34cdace458.filesusr.com/ugd/bcfc12_958f6657095746ce8b4ad93372aa7569.pdf?index=trueIn PDF document text
    • https://37bcb4aa-7747-4ff6-a352-0e22bf983c21.filesusr.com/ugd/4393d3_f7bde69c78d14600a2288f87da50be95.pdf?index=trueIn PDF document text
    • http://vubuzixefixa.onlinewebshop.net/nupato.pdfIn PDF document text
    • https://9579f988-9383-433c-acf3-5fff76e0c882.filesusr.com/ugd/191a6d_4fc4e67bd59645b88ff44d5899ae59c6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a15945e-4ac5-46cb-942c-69ecd8a2e825/wibemopinababapim.pdfIn PDF document text
    • https://e301b21f-f707-426c-a094-6199d4b1a2d6.filesusr.com/ugd/f65518_90fd8b753d1c45c0b8cfcda4b69aca88.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ec05a18-e4cf-4854-87ab-0a751efab1fa/how_to_program_charter_remote_ur4u-mdvr-chd2.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001ee81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EE81 37980 bytes
SHA-256: f4cbd1b7c3dfde362eb948a604f11a59bb186119f723afb60239643227485347
font_01_sfnt_off0002653d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2653D 5264 bytes
SHA-256: 96f2ea1050b2edda9c695cd2953c6847c99ac8648b93c0c7ea46de9bdce28c73
font_02_sfnt_off00027753.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27753 13524 bytes
SHA-256: 4077681220be6b31954afbcd1ab730799c50ad0b3a4b0b75438c0f31e1727378

Open this report in the interactive analyzer, or submit your own file for analysis.