Malicious PDF — malware analysis report

Static analysis result for SHA-256 08e6d7072403a284…

MALICIOUS

PDF

40.1 KB Created: 2020-08-03 07:53:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73ad81c50a10fcaab92edc90732b136d SHA-1: ad777d2de1882bf000cec45ee73bd55b9a803583 SHA-256: 08e6d7072403a284a44453ec53c4d369ecf1b490f4922d0de89e127754c5ceb8
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to known malicious redirector infrastructure (https://ttraff.cc/pify?keyword=rock-+ola+used+car+parts), indicating a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious.

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=rock-+ola+used+car+parts
    • http://files.exportstoriespodcast.com/uploads/1/3/2/6/132682787/5820397.pdf
    • http://files.whidbeyworkingartists.com/uploads/1/3/1/3/131380773/b3e4ed.pdf
    • http://files.casabatsu.org/uploads/1/3/1/4/131453432/45318f9.pdf
    • http://files.albertoveloso.com/uploads/1/3/1/4/131406817/texazebaw_nitigesis_xiponefag.pdf
    • http://files.christopherjungo.com/uploads/1/3/1/3/131381553/wepujusi_jafefilovilex_momab_wimizakusuve.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/9127/0563/files/placebo_mod_1._12._2.pdf
    • https://cdn.shopify.com/s/files/1/0433/7834/4085/files/jijilupokonosi.pdf
    • https://cdn.shopify.com/s/files/1/0440/8279/0552/files/2013_honda_rancher_420_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/7209/3336/files/diwivavuzo.pdf
    • https://cdn.shopify.com/s/files/1/0440/6244/1637/files/61737695683.pdf
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/vizaforijiz.pdf
    • https://cdn.shopify.com/s/files/1/0432/9183/6566/files/37456306123.pdf
    • https://cdn.shopify.com/s/files/1/0430/1501/2511/files/4189575873.pdf
    • https://cdn.shopify.com/s/files/1/0429/7555/9829/files/85206021779.pdf
    • https://cdn.shopify.com/s/files/1/0438/3732/5462/files/26058890076.pdf
    • https://cdn.shopify.com/s/files/1/0434/4872/9767/files/toxazu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4732/0728/files/pathfinder_magnimar_city_of_monuments.pdf
    • https://cdn.shopify.com/s/files/1/0432/0644/3163/files/49740508795.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31670740491.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_off00005d79.bin
e56adb7240ed28366746c14eaa153dd0d25cce9cfb9515d9aed8a313fc93804f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D79 5168 bytes
font_01_sfnt_off00006f2d.bin
0c6ea86b2481fb6dad5646f323ddce582316c49d695623140f421dc193823886		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F2D 10652 bytes

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