Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e7d48dafcce0a27…

MALICIOUS

PDF

40.2 KB Created: 2020-08-29 22:43:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c995710f37b17d60c9cd56cf6e8bcb1d SHA-1: 00e304811019b2707bbab10eaf7aee18e8a6787f SHA-256: 0e7d48dafcce0a27e329870936d0d7d9a70fb605e0a40555c7051d16851fde2e
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.cc, disguised as a 'flex fit hat sizing chart'. This indicates a phishing or malware distribution attempt. The presence of numerous Shopify links, while mostly benign, suggests an attempt to blend malicious links with legitimate ones. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a phishing or malware 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.cc/wix?keyword=flex+fit+hat+sizing+chart
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/5350/4917/files/kapezemekixexorowowi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kekesapenogetiru.pdf
    • https://cdn.shopify.com/s/files/1/0438/2064/6562/files/dunemej.pdf
    • https://cdn.shopify.com/s/files/1/0430/3598/4029/files/polar_equation_to_rectangular_equation_calculator.pdf
    • https://cdn.shopify.com/s/files/1/0436/4189/7110/files/finaxenidujotunera.pdf
    • https://cdn.shopify.com/s/files/1/0437/2883/0632/files/advantages_of_franchising.pdf
    • https://cdn.shopify.com/s/files/1/0434/2136/8482/files/bollywood_movie_mp4moviez_new_hd.pdf
    • https://cdn.shopify.com/s/files/1/0434/1330/7541/files/58457718967.pdf
    • https://cdn.shopify.com/s/files/1/0435/2396/5080/files/432588730.pdf
    • https://static.usrfiles.com/ugd/49be48_77147fecde0b41709f92449c4fb62f7c.pdf
    • https://static.usrfiles.com/ugd/b8c837_a94aac3c002b4c86a93f56b0528afafd.pdf
    • https://static.usrfiles.com/ugd/b8c837_99fad0fd65e749edbd69c1ff0b3a1c86.pdf
    • https://cdn.shopify.com/s/files/1/0434/7278/1478/files/dugalikezamuramolotedug.pdf
    • https://cdn.shopify.com/s/files/1/0429/9309/0714/files/64402756227.pdf
    • https://cdn.shopify.com/s/files/1/0457/6487/0300/files/film_battle_royale_480p.pdf
    • https://cdn.shopify.com/s/files/1/0432/6070/6971/files/59608992367.pdf
    • https://cdn.shopify.com/s/files/1/0431/1737/9745/files/sebexoke.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_off00006088.bin
f4c2f7cd68516193127cbab6d71233c0eb900db7b55830dc65036df8358f4489		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6088 5216 bytes
font_01_sfnt_off0000724b.bin
4bdad654a46580873f8ab30276d361bfec0f2b6596f8aff1aa76b3e2547f1439		 pdf-font-stream PDF embedded font (sfnt) at offset 0x724B 10004 bytes

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