Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce9c639bafa4bba9…

MALICIOUS

PDF

38.0 KB Created: 2020-08-01 12:30:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6795f9117fef876fc42bd05b73dd268d SHA-1: a14fbbb70e6c8591e7b1def69a0548a65ba45032 SHA-256: ce9c639bafa4bba932c9b1803e285e3dd371f18ebdadf52010076d99f4610c2e
128 Risk Score

Malware Insights

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

The PDF file contains a high number of external links, many pointing to potentially malicious redirectors. One such link, https://ttraff.ru/pify?keyword=bobcat+753+specs, is flagged as a malicious redirector. The presence of a 'download button' heuristic further suggests a lure to trick users into clicking these links. No scripts were extracted, but the structure indicates a link farm designed to drive traffic to malicious infrastructure.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=bobcat+753+specs
    • http://files.taradennyimages.com/uploads/1/3/2/6/132696263/dimesafipoxeruzeg.pdf
    • http://files.teambuildingdays.org/uploads/1/3/1/4/131407029/6623359.pdf
    • http://files.haveaseatcolorado.com/uploads/1/3/0/7/130738748/d270e3c56.pdf
    • https://cdn.shopify.com/s/files/1/0435/4542/8127/files/31732116238.pdf
    • https://cdn.shopify.com/s/files/1/0437/3292/6616/files/vilufidiku.pdf
    • https://cdn.shopify.com/s/files/1/0431/6299/2795/files/85542005800.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/98817324795.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/81599599528.pdf
    • https://cdn.shopify.com/s/files/1/0434/5672/5153/files/nusawejume.pdf
    • https://cdn.shopify.com/s/files/1/0430/8529/9876/files/91404971471.pdf
    • https://cdn.shopify.com/s/files/1/0434/0659/0106/files/xobujakixovofoxodepines.pdf
    • https://cdn.shopify.com/s/files/1/0430/9286/9281/files/26847269159.pdf
    • https://cdn.shopify.com/s/files/1/0436/2688/9369/files/98399353717.pdf
    • https://cdn.shopify.com/s/files/1/0434/5269/4680/files/56097550313.pdf
    • https://cdn.shopify.com/s/files/1/0433/4456/0281/files/bebabemagulifitonire.pdf
    • https://cdn.shopify.com/s/files/1/0439/5443/8302/files/wasupuniwafarit.pdf
    • https://cdn.shopify.com/s/files/1/0431/4395/4594/files/jojazalebifa.pdf
    • https://cdn.shopify.com/s/files/1/0433/9754/6149/files/53401942219.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_off00005599.bin
cca64d57be019508702eb5f64e0169c2df0c3a0a95f5b2754b1879d6e31e0bf2
pdf-font-stream PDF embedded font (sfnt) at offset 0x5599 5356 bytes
font_01_sfnt_off000067f0.bin
640694f16b5af3f9173090dd03c53d16af26f16e817e2ff384eb6aeea201e8e4
pdf-font-stream PDF embedded font (sfnt) at offset 0x67F0 10372 bytes