Malicious PDF — malware analysis report

Static analysis result for SHA-256 80109a8049882cb4…

MALICIOUS

PDF

102.0 KB Created: 2020-08-12 00:24:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf07106d0039d3ffe54eb1527ed7b5e2 SHA-1: 378a7b14681822ec99e932923d367d018a818213 SHA-256: 80109a8049882cb4846cf65d065c272cf491261b7ba92c681212900d4609e426
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to obscure the final destination of the malicious content. The PDF also hosts a large number of external links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic to distribute malicious content. The ML classifier strongly indicates maliciousness.

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=intoxication+arsenic+pdf
    • http://vuginira.apbparts.com/uploads/1/3/1/6/131606056/nipebatanu.pdf
    • http://files.emalanassociates.com/uploads/1/3/2/6/132695543/wulotafatit.pdf
    • http://jemaxonaz.mrandon.com/uploads/1/3/1/8/131856725/situseror.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/8515/9845/files/16994202257.pdf
    • https://cdn.shopify.com/s/files/1/0438/1786/1277/files/79434899463.pdf
    • https://cdn.shopify.com/s/files/1/0431/4156/2522/files/boy_scout_uniform_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/3905/5253/files/wizujax.pdf
    • https://cdn.shopify.com/s/files/1/0430/3486/9921/files/18411599839.pdf
    • https://cdn.shopify.com/s/files/1/0441/1208/5144/files/zokezuradolegisasomilu.pdf
    • https://cdn.shopify.com/s/files/1/0438/6160/6550/files/24290424187.pdf
    • https://cdn.shopify.com/s/files/1/0431/6630/2374/files/94980249082.pdf
    • https://cdn.shopify.com/s/files/1/0440/0440/9494/files/6th_grade_reading_passage.pdf
    • https://cdn.shopify.com/s/files/1/0429/7680/5018/files/nevadubegogixukade.pdf
    • https://cdn.shopify.com/s/files/1/0434/5249/8070/files/sidemen_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/4842/6902/files/bolukaxopenu.pdf
    • https://cdn.shopify.com/s/files/1/0428/4337/3735/files/jasakad.pdf
    • https://cdn.shopify.com/s/files/1/0437/7326/4030/files/trb_computer_science_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/6713/6413/files/vabagoxizudenutepekol.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013b09.bin
7b25237b5c64a9f749bad36cd90cf963f99bbc0da7d05287177c71631319b6b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13B09 6916 bytes
font_01_sfnt_off00015254.bin
725fcf96ffe7cddae64f112d5fde6c48143241684d5c00174c8f7a301bace827		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15254 5124 bytes
font_02_sfnt_off000163ca.bin
556b7f0a1eaab61d466d9c906e19c19167d6c5a9aa996011ee2620d92e4d2c6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x163CA 11572 bytes

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