Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d58146a24719a73…

MALICIOUS

PDF

66.4 KB Created: 2020-08-05 11:44:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 133cd8484747a47a654603b9e28c53f0 SHA-1: e1129f565ce99a956755a1ac69ef373f7620d9a3 SHA-256: 0d58146a24719a7386131e5a23e34e915a2404d2ffca999ad9933de5c7c3fceb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous links to external resources, including a critical redirector URL (ttraff.cc) identified as malicious. The document body, though heavily obfuscated, contains the same malicious URL. The presence of a link farm and the ML classifier's high confidence score indicate a malicious intent to redirect users to harmful content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=calidad+definicion+segun+autores+pdf
    • http://files.tristaricelandics.com/uploads/1/3/1/4/131453618/713540.pdf
    • http://files.nativedivacreations.com/uploads/1/3/1/6/131606951/1474328.pdf
    • http://files.geoffstear.co/uploads/1/3/0/8/130815009/8116447.pdf
    • http://files.lisbonlighttours.com/uploads/1/3/1/6/131636762/e7c8270e51a07f.pdf
    • http://files.wellingtoncricketclub.com/uploads/1/3/0/7/130776118/tilakapalixameparij.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30552771564.pdf
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/luluxi.pdf
    • https://cdn.shopify.com/s/files/1/0429/5147/5351/files/slow_ride_bass_tab.pdf
    • https://cdn.shopify.com/s/files/1/0427/8085/2383/files/kesajijupavi.pdf
    • https://cdn.shopify.com/s/files/1/0437/9662/7618/files/let_me_watch_this_1chanel.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96626323422.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/84860081798.pdf
    • https://cdn.shopify.com/s/files/1/0430/1104/7575/files/17631116110.pdf
    • https://cdn.shopify.com/s/files/1/0433/3859/6511/files/todoridikolirabolozik.pdf
    • https://cdn.shopify.com/s/files/1/0433/7994/9718/files/97191955911.pdf
    • https://cdn.shopify.com/s/files/1/0434/5020/4316/files/zomagijewowazoditemuvuli.pdf
    • https://cdn.shopify.com/s/files/1/0437/3676/0485/files/87795761872.pdf
    • https://cdn.shopify.com/s/files/1/0431/7511/6964/files/27820632783.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_off0000c4ef.bin
3ce14f7eca1e4b948fe3bb6327ced99a6851085b14f458cb5f3d007ac40b9544		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC4EF 5228 bytes
font_01_sfnt_off0000d6c7.bin
3240a9f93c7c46b3661c7b473baadf8b2c0defcbd6c3d18d073ad84d033c5c52		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD6C7 10868 bytes

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