Malicious PDF — malware analysis report

Static analysis result for SHA-256 2205c44cc522b679…

MALICIOUS

PDF

46.6 KB Created: 2020-08-02 04:19:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0a87f8f77a085ac5a0f33580db519578 SHA-1: f23b19a4dd769a0364c024611d8c65cbcb7d8db1 SHA-256: 2205c44cc522b679cf1001e4a4fa35e1b2fbb0191692a38b09567df8462e40ca
152 Risk Score

Malware Insights

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

The PDF was flagged as malicious by an ML classifier and contains numerous embedded links. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=shuffle+array+javascript'. Another critical heuristic indicated a PDF link farm, with many links pointing to Shopify domains, likely used to obscure the true malicious destinations. The document body contains garbled text but also includes the redirector URL, suggesting it's part of the lure.

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=shuffle+array+javascript
    • http://files.iamlisteningtoyou.com/uploads/1/3/2/3/132303410/d47a74b24.pdf
    • http://files.creatorsdigitalmm.com/uploads/1/3/0/7/130740589/tajara_rutevodawuwe_kitolum_javaja.pdf
    • http://files.powerofgodcathedral.com/uploads/1/3/0/8/130874042/6522084.pdf
    • http://files.prescottrealestatereferrals.com/uploads/1/3/0/8/130813612/4436830.pdf
    • https://cdn.shopify.com/s/files/1/0432/6621/2003/files/fezurufuvufiji.pdf
    • https://cdn.shopify.com/s/files/1/0437/3617/0657/files/62183232982.pdf
    • https://cdn.shopify.com/s/files/1/0428/7945/1289/files/63625773827.pdf
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/25739302201.pdf
    • https://cdn.shopify.com/s/files/1/0432/4386/4224/files/euro_pro_toaster_oven.pdf
    • https://cdn.shopify.com/s/files/1/0427/9681/0396/files/punibor.pdf
    • https://cdn.shopify.com/s/files/1/0437/6972/5080/files/31334333074.pdf
    • https://cdn.shopify.com/s/files/1/0439/5070/2750/files/jipoxogix.pdf
    • https://cdn.shopify.com/s/files/1/0431/7852/4832/files/44182370671.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/7082322425.pdf
    • https://cdn.shopify.com/s/files/1/0435/4015/2475/files/94383208661.pdf
    • https://cdn.shopify.com/s/files/1/0429/2621/1238/files/zunibivubogogilutowur.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_off00006ae8.bin
5686cc9f715e2b5625c010182855fa1be4d2f0f097fb91571a98ecdb4cb13167		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE8 5112 bytes
font_01_sfnt_off00007c72.bin
bd66b4079e6f6fcc740d1034732f5b89aa5aabf1f0b84e4abefd6c0822b89b1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C72 10256 bytes
font_02_sfnt_off00009f46.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F46 4324 bytes

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