Malicious PDF — malware analysis report

Static analysis result for SHA-256 661665144b5fb98e…

MALICIOUS

PDF

45.7 KB Created: 2020-08-05 06:15:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4485063f7628ad84dec5aa3878294904 SHA-1: cccf415bb3f9a2beac75308219237876c02802f1 SHA-256: 661665144b5fb98e1ac8387ae175e67006f6be1f47fd68c6e9025535de5da7ba
154 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a link farm hosted on Shopify, designed to obscure the ultimate destination. One critical heuristic identified a redirector link to 'ttraff.cc', which is known malicious infrastructure. This suggests the document is part of a phishing or scam campaign, likely using the 'water logging' lure to entice clicks. No scripts were extracted, but the presence of malicious redirectors and a link farm strongly indicates a malicious intent to redirect users to harmful sites.

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=water+logging+in+your+locality+pdf
    • http://files.stacyparkerjoyce.com/uploads/1/3/0/7/130738998/misivupirote-rovixuvanob-begof-xiwepol.pdf
    • http://files.triciadeed.com/uploads/1/3/1/3/131379875/kowit_gixidigexoj.pdf
    • http://files.radarstrongjones.com/uploads/1/3/2/6/132681080/972861.pdf
    • http://files.religious-nonverbal.info/uploads/1/3/0/8/130814588/kajatijekawa_muguzatinidawug.pdf
    • http://files.vikkilutton.com/uploads/1/3/1/6/131637014/davape.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/6790/6975/files/foxuwupibokubi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2482/6014/files/korufuvi.pdf
    • https://cdn.shopify.com/s/files/1/0428/5808/6559/files/apollinaire_alcools_english.pdf
    • https://cdn.shopify.com/s/files/1/0431/4421/6727/files/devoxazi.pdf
    • https://cdn.shopify.com/s/files/1/0430/5358/0437/files/4457803528.pdf
    • https://cdn.shopify.com/s/files/1/0433/5481/6667/files/xanurof.pdf
    • https://cdn.shopify.com/s/files/1/0448/3471/7858/files/alphabet_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/2738/1920/files/vorukuxonekoroju.pdf
    • https://cdn.shopify.com/s/files/1/0430/9005/1221/files/bamel.pdf
    • https://cdn.shopify.com/s/files/1/0437/4586/9985/files/wixarapumeletezubur.pdf
    • https://cdn.shopify.com/s/files/1/0435/5679/8627/files/xiwadipafitaxir.pdf
    • https://cdn.shopify.com/s/files/1/0439/1672/2344/files/52486253679.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_off00007331.bin
5b97cc80eb420cfb0bf2affe3113b1b1a41cb18d76d4f63629387cf9b0d3b563		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7331 5260 bytes
font_01_sfnt_off0000853d.bin
463f230bcb8ba64061611f143ca9c50d6094b34bc0da7cb66168c0c15fd81619		 pdf-font-stream PDF embedded font (sfnt) at offset 0x853D 10576 bytes

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