Malicious PDF — malware analysis report

Static analysis result for SHA-256 033569738a455351…

MALICIOUS

PDF

79.5 KB Created: 2020-11-22 00:31:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 760d5a02042ccd2aefa2f22e2da2844a SHA-1: daa5dcbb7f4b7d0841dd1917db8828ad5f26c0da SHA-256: 033569738a4553511623aec7f6f390124db924fa96f87d82244d2885b8bf838f
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffine.ru/aws?utm_term=gypsy+jazz+sheet+music+violin PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369508/normal_5f906775cbeb4.pdfIn PDF document text
    • https://bulipabuwalo.weebly.com/uploads/1/3/4/1/134131868/botegonog.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/86e047e7-5902-42d0-a120-382375c6b824/45960884653.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/baciloscopia_en_orina.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/vagewi.pdfIn PDF document text
    • https://s3.amazonaws.com/bisazabe/alita_battle_angel_game_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/ada_diabetes_june_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/faf12fac-96be-4be0-b4fb-291a77652a80/logarivasujemogekedaw.pdfIn PDF document text
    • https://s3.amazonaws.com/wutezigojuxi/99167999157.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b50b62b-f01b-4d00-9dbe-51a500199e7e/literacy_by_design_overview.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/293ee4cc-8079-45ce-9926-40b4a054d518/95375019424.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fad6d308-be46-4168-bf5b-8c9b07e2485d/corel_videostudio_12_activation_code.pdfIn PDF document text
    • https://s3.amazonaws.com/zatazewoz/word_search_math_terms_puzzle_answers.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off0000e2f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2F9 5396 bytes
SHA-256: 1a8e90c24f5fae3cba1721d8242403eecec36f6e123848af5913bfc981cd187e
font_01_sfnt_off0000f554.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF554 11588 bytes
SHA-256: 22de1387bfeb66f9ddf2b39ce35a4b25bc14bcdf5e5ac7c048a0458a59116a4c
font_02_sfnt_off00011ba2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BA2 16100 bytes
SHA-256: 84650fe671c70ac66f3af0994468c9b9feb42d01905b0f030d5781e095ef8e52

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