Malicious PDF — malware analysis report

Static analysis result for SHA-256 1965180bfbb5d841…

MALICIOUS

PDF

298.1 KB Created: 2020-07-26 11:37:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b126c60ae8d4b92b332af46a2166f26f SHA-1: 07e88813c7778efaeee2c3fa28e380a59ac9d124 SHA-256: 1965180bfbb5d841bec3af9cd53ce280512fde3b63085e1e52a1546e0ff80799
102 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'ttraff.cc', which is flagged as malicious. The document body and heuristics indicate an urgency lure, suggesting a phishing or malware distribution attempt. No scripts were extracted, but the primary threat is the embedded malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9719

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=bts+first+idol+performance
    • http://files.cimeron.com/uploads/1/3/1/4/131454116/xijekofatepesim_lejimatofuz.pdf
    • http://files.stewartislandhelicopters.co.nz/uploads/1/3/2/6/132696210/nuzaw.pdf
    • http://files.robbieleespencer.com/uploads/1/3/1/6/131606923/vekupisugor.pdf
    • http://files.sswonline.com/uploads/1/3/1/3/131383297/womiza.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/6819/4978/files/92404436318.pdf
    • https://cdn.shopify.com/s/files/1/0431/5486/6333/files/tigimejarabawolupiveri.pdf
    • https://cdn.shopify.com/s/files/1/0428/5405/6092/files/lelezulesisoxinepijaxevop.pdf
    • https://cdn.shopify.com/s/files/1/0435/2599/6698/files/nototagapunuw.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dadimutixiwukigojubiw.pdf
    • https://cdn.shopify.com/s/files/1/0431/0227/3703/files/manixivofudemazukibogelap.pdf
    • https://cdn.shopify.com/s/files/1/0429/8833/9361/files/81796898897.pdf
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/pujetetipigipetuz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fasexerogetotano.pdf
    • https://cdn.shopify.com/s/files/1/0427/7737/8972/files/nivop.pdf
    • https://cdn.shopify.com/s/files/1/0431/2462/1473/files/valaniwofefologabe.pdf
    • https://cdn.shopify.com/s/files/1/0436/2931/4206/files/64670057700.pdf
    • https://cdn.shopify.com/s/files/1/0432/4563/3691/files/16240062635.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_009_off0002f435.bin
a473d63f9146b6f5b76d24f68a67dfd7789f65c01c4c69d368f69d7f4a5e47ff		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F435 110316 bytes
font_01_sfnt_off000430d2.bin
08a25c0471fa047ac230f1ae9322397669b7dfa195fd9eb5e90a7d4260200693		 pdf-font-stream PDF embedded font (sfnt) at offset 0x430D2 5136 bytes
font_02_sfnt_off0004421f.bin
df2fe53eb2b0ad7b7f1e3546b5dc26b5e2d25253b2018f8843cfa0a5041ea265		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4421F 5060 bytes
font_03_sfnt_off00045466.bin
0b63fccbe7c34b7370c7d16c2c86d19ba7abd5cab3dd17639dd7e3fbc2029916		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45466 14768 bytes
font_04_sfnt_off00048386.bin
2c5f1a2e3d9f683f6a217a47aeaaae813f7d4ef732a5ff54a929695507d09140		 pdf-font-stream PDF embedded font (sfnt) at offset 0x48386 16092 bytes

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