Malicious PDF — malware analysis report

Static analysis result for SHA-256 29f26272de50e609…

MALICIOUS

PDF

45.6 KB Created: 2020-08-04 02:41:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 08b6813d21b07146868d975bd2976a0d SHA-1: b3d9d2677404327461714601b65687b168a6b290 SHA-256: 29f26272de50e6091facbaad62741be92e352002d0c7d348bebc5049ec555650
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.cc/pify?keyword=camera+angles+in+filmmaking+pdf', is identified as a malicious redirector. This suggests the document's primary purpose is to lure users to malicious infrastructure, likely for phishing or further malware delivery. The ML classifier also strongly indicated 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.cc/pify?keyword=camera+angles+in+filmmaking+pdf
    • http://files.nywomenofpurpose.org/uploads/1/3/1/4/131438784/9810556.pdf
    • http://files.petersburgpowerwashing.com/uploads/1/3/0/7/130775969/9599260.pdf
    • http://files.omraneguedhami.com/uploads/1/3/1/4/131407423/8905775.pdf
    • http://files.manaserigallery.com/uploads/1/3/2/6/132696048/japubebuxibaxotada.pdf
    • https://cdn.shopify.com/s/files/1/0431/2062/3765/files/25093239194.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32732230761.pdf
    • https://cdn.shopify.com/s/files/1/0433/6808/7717/files/somiwosudeg.pdf
    • https://cdn.shopify.com/s/files/1/0436/0683/5358/files/67861632407.pdf
    • https://cdn.shopify.com/s/files/1/0428/5664/4774/files/kufanoxugazegifedabunekem.pdf
    • https://cdn.shopify.com/s/files/1/0429/6966/1589/files/valazixogigoguzaz.pdf
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/wow_min_js.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/64831632673.pdf
    • https://cdn.shopify.com/s/files/1/0432/9573/5963/files/japifowazanofebokilu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7066/8448/files/genovavuwivejakudopidopo.pdf
    • https://cdn.shopify.com/s/files/1/0427/8062/3015/files/mobovuwenevib.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/porovurujapiganipuzul.pdf
    • https://cdn.shopify.com/s/files/1/0434/1848/4888/files/75547329313.pdf
    • https://cdn.shopify.com/s/files/1/0433/8073/6165/files/xerojepuwum.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/48989845444.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_off000067ef.bin
b8ec05a5c8bbe6985f9a302ff0cea6533af62ee2f128b9e4d12cf21dbb9f8217		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67EF 5048 bytes
font_01_sfnt_off000078fb.bin
50644f3cd47986be721a3b0cbb8d11d804b2204b168346580a9f4ac852a4bc8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78FB 10024 bytes
font_02_sfnt_off00009b40.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B40 4324 bytes

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