Malicious PDF — malware analysis report

Static analysis result for SHA-256 59b03ec9c19f0bde…

MALICIOUS

PDF

38.0 KB Created: 2020-08-19 10:40:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88ff3f98e4b964280752cc39257a8ded SHA-1: ed4a00c544e6619530144c3be10235bb18546003 SHA-256: 59b03ec9c19f0bde1398f66f2bcf3901d1f7f083c6b55f9f5eef3f00518d8745
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm and a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for a 'horizons math 2 teacher guide'. The primary malicious URL, https://ttraff.cc/pify?keyword=horizons+math+2+teacher+guide, is used to redirect the user to other content. The PDF structure indicates it's a link farm, with many embedded URLs pointing to cdn.shopify.com, though one specific redirector URL is flagged as malicious.

Heuristics 3

  • 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.
  • 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=horizons+math+2+teacher+guide
    • http://marosiv.mspark.org/uploads/1/3/1/0/131070382/jeloxominekeziwokod.pdf
    • https://cdn.shopify.com/s/files/1/0435/6728/4379/files/advanced_actuators.pdf
    • https://cdn.shopify.com/s/files/1/0432/2174/5823/files/nubag.pdf
    • https://cdn.shopify.com/s/files/1/0435/5470/1461/files/8657153670.pdf
    • https://cdn.shopify.com/s/files/1/0432/2515/3698/files/22479865172.pdf
    • https://cdn.shopify.com/s/files/1/0437/2905/9992/files/pugumobubakisos.pdf
    • https://cdn.shopify.com/s/files/1/0434/3123/1655/files/52038102934.pdf
    • https://cdn.shopify.com/s/files/1/0431/9005/9157/files/6389295860.pdf
    • https://cdn.shopify.com/s/files/1/0434/2700/4577/files/remington_steele_episode_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/8926/4794/files/22953291176.pdf
    • https://cdn.shopify.com/s/files/1/0438/7245/2776/files/fetisife.pdf
    • https://cdn.shopify.com/s/files/1/0431/6820/2901/files/70238866983.pdf
    • https://cdn.shopify.com/s/files/1/0432/5523/4710/files/sapomibuxojudedewalupo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2839/7728/files/gifuwotiwawe.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000559b.bin
65b6e8bfdab63ee15ce3c4a64a2e9c6a7952e47351e2e85039187c33e9f8de85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x559B 5464 bytes
font_01_sfnt_off00006805.bin
ac10d33201db1e4e04d12a622eb28c88bf5d4159f3fe9fd9b2e7f10e4281bc46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6805 10392 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.