Malicious PDF — malware analysis report

Static analysis result for SHA-256 03a9b7d210d70917…

MALICIOUS

PDF

50.8 KB Created: 2020-08-02 22:08:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41206d15cedf0ab43d4c9825a4cfde8f SHA-1: 13a25aec743ef118b6366664039e4a230bb7dbeb SHA-256: 03a9b7d210d70917b3c418ea17ea11a738120cb0f038bbebe39cd5f7b2364bb6
154 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to a known malicious redirector at 'https://ttraff.com/pify?keyword=torrenting+rosetta+stone'. The document body, though heavily obfuscated, also contains this URL, suggesting a lure to external content. The presence of a large number of PDF links indicates a link farm strategy, likely to distribute malicious content or engage in SEO manipulation.

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=torrenting+rosetta+stone
    • http://files.theclasswebsite.org/uploads/1/3/0/7/130775373/misosolorukiwavepid.pdf
    • http://files.kimberlydark.com/uploads/1/3/0/8/130814390/dilik.pdf
    • http://files.onenationingod.net/uploads/1/3/2/6/132681340/5212827.pdf
    • http://files.mooneyhsclassof66reunion.org/uploads/1/3/1/3/131382808/tozonaluwojali.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/zasunonaguk.pdf
    • https://cdn.shopify.com/s/files/1/0429/3407/5558/files/takekamivogafazuketiriku.pdf
    • https://cdn.shopify.com/s/files/1/0433/6762/8950/files/12276362521.pdf
    • https://cdn.shopify.com/s/files/1/0434/0921/1557/files/76381485563.pdf
    • https://cdn.shopify.com/s/files/1/0428/5490/8071/files/kowivoselexopurop.pdf
    • https://cdn.shopify.com/s/files/1/0434/0698/3318/files/brew_install_python_3._5.pdf
    • https://cdn.shopify.com/s/files/1/0432/9809/5272/files/1874408809.pdf
    • https://cdn.shopify.com/s/files/1/0430/3893/3146/files/mupunupinerazotujatege.pdf
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/zekovorodotivozo.pdf
    • https://cdn.shopify.com/s/files/1/0433/3492/6495/files/44125957319.pdf
    • https://cdn.shopify.com/s/files/1/0431/8032/7070/files/vigefujoma.pdf
    • https://cdn.shopify.com/s/files/1/0430/5174/5442/files/vutinizesefulezu.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000736c.bin
edc32e25e91277f4a24286bd1945ad1a92b21b45e2c4f2e937f3b7cc7dee27b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x736C 4772 bytes
font_01_sfnt_off000083b6.bin
3828bdca3c452cc1023698b16f17117d52972ad901e7bde07cf044525afbbbdf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83B6 10616 bytes
font_02_sfnt_off0000a826.bin
0e42acc142495b144958b40dfd6bfaab055fd31481e0c1902acb14e595e35b79		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA826 16060 bytes

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