Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b0dfc2967be17e3…

MALICIOUS

PDF

52.1 KB Created: 2020-08-28 06:02:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 582068739f63234607b35fc278dd639a SHA-1: 3f15a33ecddf8935e9b1d64fd85470ea7f8c8626 SHA-256: 6b0dfc2967be17e3fe97133bb4c11e2532234f982c8425fa148af90d001d4332
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically a URL designed to look like a search result for spiritual content. The ML classifier strongly indicates maliciousness, and the presence of numerous external PDF links suggests a link farm or SEO poisoning tactic. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing or redirection attack.

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.com/pify?keyword=haripath+baba+maharaj+satarkar+mp3+f
    • http://vowoxeva.southdevonslinglibrary.com/uploads/1/3/2/7/132740267/feratasupa-savepaxifikano-rusipuzit-kepazeve.pdf
    • http://sukowedok.esscc.org/uploads/1/3/1/4/131437736/5480820.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0441/3535/0424/files/nagat.pdf
    • https://cdn.shopify.com/s/files/1/0437/1084/1000/files/ms_excel_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0436/9963/4330/files/buddha_hoga_tera_baap_movie_full.pdf
    • https://cdn.shopify.com/s/files/1/0430/4194/7801/files/4_biological_molecules_and_their_functions.pdf
    • https://cdn.shopify.com/s/files/1/0440/1440/3742/files/sunbeam_bakehouse_compact_breadmaker.pdf
    • https://cdn.shopify.com/s/files/1/0440/1843/4213/files/administrao_estratgica_e_vantagem_competitiva_download_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0428/8669/3023/files/23629091669.pdf
    • https://cdn.shopify.com/s/files/1/0436/0008/5160/files/74198375680.pdf
    • https://cdn.shopify.com/s/files/1/0430/6065/8333/files/67825975097.pdf
    • https://cdn.shopify.com/s/files/1/0432/3016/7202/files/personality_type_quiz.pdf
    • https://cdn.shopify.com/s/files/1/0429/3623/8236/files/84996690658.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_off000080e7.bin
48d5635229c8c886ebe41086eed41dfe696e8e6a43b92d7b7f26a392a147bc9d
pdf-font-stream PDF embedded font (sfnt) at offset 0x80E7 5512 bytes
font_01_sfnt_off00009376.bin
4d671cf80c3ae2ded99a5c860bb009698ac11ffa8820753ea10c433d29d0b07d
pdf-font-stream PDF embedded font (sfnt) at offset 0x9376 15240 bytes