Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd7ec85c87f1b465…

MALICIOUS

PDF

46.9 KB Created: 2020-08-12 01:37:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cef8eef037fb82bceb2a8e73eebac502 SHA-1: 02e2f4e33993554634476cd2bace397ec256ab40 SHA-256: bd7ec85c87f1b465161b7d800bb89b7181b9f0db6d40eb5696a82ef94401e66a
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=arioso+cello+pdf'. Additionally, it exhibits a mass external PDF link farm, with many links hosted on cdn.shopify.com, suggesting an attempt to obscure the true malicious destination. The document body also contains a callback lure, consistent with phishing or tech-support scams.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=arioso+cello+pdf
    • http://gabidizup.miseeiresaratoga.com/uploads/1/3/0/8/130874493/mifasatilemogufekaw.pdf
    • http://xavesaru.mockingbirdoakland.com/uploads/1/3/2/3/132303382/didogizuli.pdf
    • http://files.napervilleroofingrepair.com/uploads/1/3/1/6/131606807/a55596df1b782a4.pdf
    • http://files.clemsongammaphi.com/uploads/1/3/1/3/131379059/kololoza.pdf
    • https://cdn.shopify.com/s/files/1/0431/1878/8774/files/can_t_help_falling_in_love_piano_notes.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16949815227.pdf
    • https://cdn.shopify.com/s/files/1/0437/4075/8170/files/piguji.pdf
    • https://cdn.shopify.com/s/files/1/0431/4234/8949/files/67968547604.pdf
    • https://cdn.shopify.com/s/files/1/0439/4188/8155/files/bissell_crosswave_pet_pro.pdf
    • https://cdn.shopify.com/s/files/1/0428/4124/3814/files/mindy_kaling_book.pdf
    • https://cdn.shopify.com/s/files/1/0436/7391/1449/files/vebagurixobixopob.pdf
    • https://cdn.shopify.com/s/files/1/0428/2161/5775/files/genetics_questions_and_answers_grade_12.pdf
    • https://cdn.shopify.com/s/files/1/0434/1963/1765/files/5444755800.pdf
    • https://cdn.shopify.com/s/files/1/0434/0740/9319/files/assam_tet_book_assamese_medium.pdf
    • https://cdn.shopify.com/s/files/1/0431/3504/1693/files/65563824702.pdf
    • https://cdn.shopify.com/s/files/1/0431/6102/6719/files/kolaxalobubu.pdf
    • https://cdn.shopify.com/s/files/1/0432/3993/2067/files/98199587826.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064e4.bin
b96a01f1ab2618a76cd9d6807588a22db32c948d4c062c87b9805bcb967bfc53
pdf-font-stream PDF embedded font (sfnt) at offset 0x64E4 4928 bytes
font_01_sfnt_off000075b6.bin
6acfdd964a6087a800424deab86369df462111fd3dc89c7a8aae670d8cefb888
pdf-font-stream PDF embedded font (sfnt) at offset 0x75B6 10484 bytes
font_02_sfnt_off000099f0.bin
9cfb948b915a4694feeb7f8719f2b65905b0a58e2ed918074a610570d07e7249
pdf-font-stream PDF embedded font (sfnt) at offset 0x99F0 16100 bytes