Malicious PDF — malware analysis report

Static analysis result for SHA-256 56e1028421a67df0…

MALICIOUS

PDF

42.0 KB Created: 2020-08-04 11:48:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9cee685d18bc1596156e7398a536f643 SHA-1: 4bdac5571b63ec2e7166aec5978e2c7e33c605dd SHA-256: 56e1028421a67df0ee6f14ca7aa52fdc7834c0f697ee79c0a59f0e4edb35e127
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=hedging+methods+of+foreign+exchange+risk+pdf'. This URL is likely used to redirect the user to a malicious site. The document body, though partially corrupted, contains text related to 'hedging methods of foreign exchange risk pdf', suggesting a lure to entice users to click the malicious link. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy to improve SEO and distribute the malicious lure.

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.ru/pify?keyword=hedging+methods+of+foreign+exchange+risk+pdf
    • http://files.inphyre.com/uploads/1/3/0/9/130969655/344bbd93eb1.pdf
    • http://files.mineolaindianriders.org/uploads/1/3/0/7/130776336/4381803.pdf
    • http://files.cityhighruns.com/uploads/1/3/1/8/131856987/bezegire.pdf
    • http://files.heartlandjungians.org/uploads/1/3/0/7/130776841/ziniruper.pdf
    • http://files.mckenziemcmahon.com/uploads/1/3/0/7/130739415/d99c2bfe4ad.pdf
    • https://cdn.shopify.com/s/files/1/0433/6615/4394/files/navaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/3622/1341/files/77460344820.pdf
    • https://cdn.shopify.com/s/files/1/0429/6219/0499/files/password_protect_file_adobe_reader_dc.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71061356311.pdf
    • https://cdn.shopify.com/s/files/1/0433/7916/3285/files/33694689681.pdf
    • https://cdn.shopify.com/s/files/1/0434/4394/5628/files/latin_pronounciation_audio.pdf
    • https://cdn.shopify.com/s/files/1/0432/9714/4990/files/bakumowigugupakobizivemi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1446/3394/files/kodanexajawidezuvuwalero.pdf
    • https://cdn.shopify.com/s/files/1/0435/5037/6100/files/tuxopuzebirilipodavalolu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4573/2007/files/wadogobawovijamakojezago.pdf
    • https://cdn.shopify.com/s/files/1/0434/0813/0197/files/78016826041.pdf
    • https://cdn.shopify.com/s/files/1/0433/4492/0726/files/81095245860.pdf
    • https://cdn.shopify.com/s/files/1/0430/9850/5369/files/wexawowulek.pdf
    • https://cdn.shopify.com/s/files/1/0433/7362/5500/files/1998_ford_f150_service_manual.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_off0000648b.bin
c5da82a504dd96bbefe0f490fc6707bcf20592d7dfc6c15fb33170c4c3317de3
pdf-font-stream PDF embedded font (sfnt) at offset 0x648B 5632 bytes
font_01_sfnt_off00007790.bin
2d92b86856fc30628485fbcfd7625da8404cb4c5cba5c18b33a0b8e6f3c518cf
pdf-font-stream PDF embedded font (sfnt) at offset 0x7790 10316 bytes