Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cc5cfcc15c78b0d…

MALICIOUS

PDF

40.3 KB Created: 2020-08-25 05:13:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 958b7df304c09425a3bb407857dc1508 SHA-1: 3ffb5fad78d633da2dcf164e29d8ebd12aa3fa14 SHA-256: 3cc5cfcc15c78b0debd402ea7a18c9f953aaf48857d767959f342ea3b7a86b0a
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'enzyme reactions worksheet' and the malicious URL, suggesting a lure. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy, likely to obscure the primary malicious destination. No scripts were extracted from this sample.

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.com/pify?keyword=enzyme+reactions+worksheet
    • http://files.mochiboutique.com/uploads/1/3/0/8/130873995/valivobabajupi.pdf
    • http://disidajiw.orikiritesofpassage.org/uploads/1/3/0/8/130874493/gulugedogoval.pdf
    • http://files.lesimprimespersonnalises.com/uploads/1/3/1/3/131380870/7255377.pdf
    • https://cdn.shopify.com/s/files/1/0431/7003/7924/files/69279514910.pdf
    • https://cdn.shopify.com/s/files/1/0431/9805/4558/files/anganwadi_sahayika_form_rajasthan.pdf
    • https://cdn.shopify.com/s/files/1/0431/8851/9080/files/514908197.pdf
    • https://cdn.shopify.com/s/files/1/0444/3154/0391/files/cambridge_igcse_geography_student_book.pdf
    • https://cdn.shopify.com/s/files/1/0435/9258/1288/files/chakravyuh_2012_movie_480p.pdf
    • https://cdn.shopify.com/s/files/1/0449/8512/2984/files/sedatixamatene.pdf
    • https://cdn.shopify.com/s/files/1/0431/5771/7143/files/94902068048.pdf
    • https://cdn.shopify.com/s/files/1/0434/1910/7480/files/26791487798.pdf
    • https://cdn.shopify.com/s/files/1/0436/2603/7411/files/hinduism_beliefs_and_practices.pdf
    • https://cdn.shopify.com/s/files/1/0440/8446/1720/files/nedutezabitixananoz.pdf
    • https://cdn.shopify.com/s/files/1/0437/0395/9720/files/vesuvizosukikenuli.pdf
    • https://cdn.shopify.com/s/files/1/0436/9340/8409/files/hallelujah_leonard_cohen_free.pdf
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/33388449818.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_off00005f9d.bin
0b56e780937cb2f22b87d513987869626aeefcc1b6f5e7e750e8850aefa7fd91		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F9D 5272 bytes
font_01_sfnt_off00007175.bin
be59acff8ff3f51746772fb2fb32e229888a7a3ca02eab6275bc31e4c6c2ed73		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7175 10240 bytes

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