Malicious PDF — malware analysis report

Static analysis result for SHA-256 bec3d81eeb6863e4…

MALICIOUS

PDF

43.8 KB Created: 2020-08-22 07:07:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 907fdedf6f5b87e4ab69211d9bc9eacb SHA-1: ad6fccf25ec5f30bf36785c7de3824f0175c89fe SHA-256: bec3d81eeb6863e4302a93150dbba755284e05b83e7f1d4277cb6064d2cbe7d8
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=network+engineer+cv+template`. This link is presented within the document body, disguised as a CV template, likely to trick the user into clicking it. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on `cdn.shopify.com`. 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.cc/pify?keyword=network+engineer+cv+template
    • http://nutifoxa.dixiegirlsbasketball.com/uploads/1/3/1/3/131398091/mobekelup-bitasuboxosase-femazezo-xolimu.pdf
    • http://davevu.crtilepainting.com/uploads/1/3/1/4/131453114/noboverumakivize.pdf
    • http://files.benzieatvassoc.com/uploads/1/3/2/6/132682295/8883080.pdf
    • http://podulu.jfmsalesandmarketing.co.uk/uploads/1/3/0/8/130874218/aa0a74798841e0.pdf
    • http://files.silverrunceramics.com/uploads/1/3/2/7/132741029/zafijodimalasu-xiwetuzabosu-guxudu.pdf
    • https://cdn.shopify.com/s/files/1/0435/9671/0047/files/14072134491.pdf
    • https://cdn.shopify.com/s/files/1/0431/9471/2228/files/81104274992.pdf
    • https://cdn.shopify.com/s/files/1/0431/8294/8506/files/76775997301.pdf
    • https://cdn.shopify.com/s/files/1/0430/1045/7753/files/divegemodunob.pdf
    • https://cdn.shopify.com/s/files/1/0431/8514/3969/files/legupidutuwenuzofada.pdf
    • https://cdn.shopify.com/s/files/1/0429/1523/3959/files/tojuduwasuvofa.pdf
    • https://cdn.shopify.com/s/files/1/0433/3702/3656/files/bsc_agriculture_colleges_in_maharashtra.pdf
    • https://cdn.shopify.com/s/files/1/0428/1666/7815/files/phd_thesis_powerpoint_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/9635/0624/files/wezebeviweb.pdf
    • https://cdn.shopify.com/s/files/1/0436/1905/7826/files/51046092512.pdf
    • https://cdn.shopify.com/s/files/1/0431/9150/0961/files/mavuvukadavikunom.pdf
    • https://cdn.shopify.com/s/files/1/0432/1830/5179/files/rappel_anatomique_de_l_oeil.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_off00006b81.bin
274f33e9d239d1b5ad7657fbe3dec853277f2556cbbfc08b78126e35ef58d485
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B81 5260 bytes
font_01_sfnt_off00007d79.bin
4b78d1aa4d12c665d0c7faad595b0d78c9aceebc0ffe6ef132e378a34057da20
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D79 10296 bytes