Malicious PDF — malware analysis report

Static analysis result for SHA-256 5448963af78ebd4c…

MALICIOUS

PDF

37.2 KB Created: 2020-08-12 07:59:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a0d17ed5fc93508fe4fa0e51ed19012a SHA-1: 309b39501f3875325cdd36efab21c54653367e6e SHA-256: 5448963af78ebd4c209ae236f25f7e4eb810269fdb462b8d1b60817c838b2573
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing indicating it links to known malicious redirector infrastructure. The document body also contains the URL 'https://ttraff.com/pify?keyword=classifying+quadrilaterals+venn+diagram+pdf', which is likely used to redirect the user to a malicious site. The presence of numerous other PDF links suggests a link farm or SEO poisoning attempt to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=classifying+quadrilaterals+venn+diagram+pdf
    • http://files.adaptiveshooting.com/uploads/1/3/0/8/130874110/23db0133aa78d2.pdf
    • http://files.evilgeniusentertainment.com/uploads/1/3/2/6/132681295/cf8b7aec3c8.pdf
    • http://fawun.fumcsaranaclake.org/uploads/1/3/2/7/132712676/merej-naxili-pigixolazanek.pdf
    • http://boruf.webwayplus.com/uploads/1/3/1/0/131071157/5960996.pdf
    • https://cdn.shopify.com/s/files/1/0432/5313/7576/files/griffith_quantum_mechanics.pdf
    • https://cdn.shopify.com/s/files/1/0429/2126/3271/files/62319756532.pdf
    • https://cdn.shopify.com/s/files/1/0431/7121/7565/files/69370071545.pdf
    • https://cdn.shopify.com/s/files/1/0431/1026/9085/files/55834526101.pdf
    • https://cdn.shopify.com/s/files/1/0433/8342/3128/files/applied_science_in_electrical_engineering.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/40948382406.pdf
    • https://cdn.shopify.com/s/files/1/0430/5348/2137/files/boxhead_2_player_full_screen.pdf
    • https://cdn.shopify.com/s/files/1/0433/3076/4968/files/59723251665.pdf
    • https://cdn.shopify.com/s/files/1/0433/4852/5206/files/98322898486.pdf
    • https://cdn.shopify.com/s/files/1/0427/8868/3932/files/60817302321.pdf
    • https://cdn.shopify.com/s/files/1/0430/0580/4698/files/jalipolipifefesatuxo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/57412179062.pdf
    • https://cdn.shopify.com/s/files/1/0430/8585/6919/files/pekiwovoposideboxi.pdf
    • https://cdn.shopify.com/s/files/1/0430/3811/3955/files/suzudozafapofufidon.pdf
    • https://cdn.shopify.com/s/files/1/0432/2243/3953/files/varinutejewaruvejawabetuz.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_off00005315.bin
3742cf52936d8fc34eb120e49e5fcd66c6a742a50899d4c822a513b237ffcccf
pdf-font-stream PDF embedded font (sfnt) at offset 0x5315 5552 bytes
font_01_sfnt_off000065db.bin
7519655a0578672eaac425b5677678b61f71ff69e59c918caaf96b49a5fbbb2a
pdf-font-stream PDF embedded font (sfnt) at offset 0x65DB 10032 bytes