Malicious PDF — malware analysis report

Static analysis result for SHA-256 68650a17e78641f7…

MALICIOUS

PDF

59.4 KB Created: 2020-08-03 03:19:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d710a63cf5a44b5b2bd73142d43ad896 SHA-1: 1c4e7686237f31f1ceb8c59ad2250d18c7e6af60 SHA-256: 68650a17e78641f7d2564759ed7ac87e5eb2fde99f6bd7982d0b324b1043cd8d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, with one identified as a malicious redirector pointing to 'https://ttraff.cc/pify?keyword=run+travis+locally'. The document body, though partially corrupted, includes text related to running tasks locally and references the wkhtmltopdf tool, suggesting a potential lure or obfuscation technique. The high ML score and the presence of a link farm indicate a malicious intent to direct users to potentially harmful content.

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=run+travis+locally
    • http://files.pleasuresilb.com/uploads/1/3/1/8/131856706/jakof.pdf
    • http://files.minasbeautysupply.com/uploads/1/3/2/7/132741109/8994384.pdf
    • http://files.nphsjrwolfpack.com/uploads/1/3/1/4/131483253/pageponiputi_gosalobire_vopepas_fatibo.pdf
    • http://files.uniquethingsbylingmerth.com/uploads/1/3/0/9/130969498/9f5c25136057d53.pdf
    • http://files.doctormabuse-themovie.com/uploads/1/3/2/6/132696044/31f72.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/8320/9631/files/54169907716.pdf
    • https://cdn.shopify.com/s/files/1/0437/1025/1176/files/61083725603.pdf
    • https://cdn.shopify.com/s/files/1/0431/6479/5044/files/pathfinder_magus_build.pdf
    • https://cdn.shopify.com/s/files/1/0437/3689/1544/files/46133208958.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mijafovaginidobu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8201/5129/files/kototigapovitoburukosir.pdf
    • https://cdn.shopify.com/s/files/1/0429/6055/2089/files/microeconomics_colander.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bifezunelavezide.pdf
    • https://cdn.shopify.com/s/files/1/0431/1384/0793/files/60263603628.pdf
    • https://cdn.shopify.com/s/files/1/0434/7396/1110/files/embrace_of_the_vampire_cast.pdf
    • https://cdn.shopify.com/s/files/1/0436/6244/2661/files/soberodibumuw.pdf
    • https://cdn.shopify.com/s/files/1/0429/1274/3591/files/51001320886.pdf
    • https://cdn.shopify.com/s/files/1/0432/3701/5719/files/adp_payroll_workcenter.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_off000095da.bin
97d5791d18b77d20a413a3a28b913fc13e26715e937251020080a285dde4a509		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95DA 4960 bytes
font_01_sfnt_off0000a6d8.bin
55c8d220b79babfa7f3d0fc62917b36d03a8b4c205ae0221d5a596d425a1ae1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6D8 10748 bytes
font_02_sfnt_off0000cbcd.bin
d7dbcefd5a9d087f9dbd48d87e5b82950a900fa0f666d4a1f78598b818f3f613		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCBCD 16060 bytes

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