Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e89453a73ceb120…

MALICIOUS

PDF

45.1 KB Created: 2020-08-13 04:14:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 605c62133284905d903d708815be1f60 SHA-1: a674a012a64d4ed9295202f7737381c626443da0 SHA-256: 0e89453a73ceb1208db33db9f47151ee898ebd20c2bbc938c02e1b03c5f27339
154 Risk Score

Malware Insights

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

The PDF document contains a deceptive title and numerous links, masquerading as a utility for merging PDFs. The primary link, 'https://ttraff.cc/pify?keyword=fusionner+des+pdf+en+un+seul+document', is identified as a malicious redirector, indicating a phishing or malware distribution attempt. The presence of a large number of external PDF links suggests a link farm or SEO manipulation tactic to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://ttraff.cc/pify?keyword=fusionner+des+pdf+en+un+seul+document
    • http://files.flipconsultants.com/uploads/1/3/0/7/130740586/6921591.pdf
    • http://katetu.gatheringessence.com/uploads/1/3/2/6/132681495/4200784.pdf
    • http://files.flatandfancy.com/uploads/1/3/1/4/131452741/tokezakuladexopol.pdf
    • http://files.nlg-pros.com/uploads/1/3/0/9/130969910/katixiratowapo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/9649/6544/files/ielts_sample_answer_sheet_writing.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bugasodaliza.pdf
    • https://cdn.shopify.com/s/files/1/0430/7940/1634/files/pirate_bay_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0434/4774/6721/files/91090467084.pdf
    • https://cdn.shopify.com/s/files/1/0431/1570/8573/files/57902672890.pdf
    • https://cdn.shopify.com/s/files/1/0440/1584/5541/files/13640892825.pdf
    • https://cdn.shopify.com/s/files/1/0435/0119/1328/files/res._redirect_not_working.pdf
    • https://cdn.shopify.com/s/files/1/0434/6609/6806/files/74537270240.pdf
    • https://cdn.shopify.com/s/files/1/0434/6055/9013/files/adobe_reader_for_android_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/3828/5734/files/bajiwow.pdf
    • https://cdn.shopify.com/s/files/1/0433/7310/1214/files/abacus_maths_books_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/6508/9941/files/rails_generate_migration.pdf
    • https://cdn.shopify.com/s/files/1/0437/3810/3962/files/93899007974.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000715a.bin
24c870cbbeaa2882b53d2ef55ea137861aeab434255b46040ed7c181fabe0e41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x715A 5048 bytes
font_01_sfnt_off0000826e.bin
f6b21e1f08c278444a8a89e5573aac67411c4abf384a08700b6bb612d0d395ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x826E 11880 bytes

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