Malicious PDF — malware analysis report

Static analysis result for SHA-256 461bbe6bf23ba7f6…

MALICIOUS

PDF

45.7 KB Created: 2020-08-27 17:45:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e5ad2a9c503a3cc86d98c6ee7d50f830 SHA-1: dd30f3c20a7b3e228cd1650f22b950f077cfce6d SHA-256: 461bbe6bf23ba7f6111506a697f65b747691e366b7dd9c4a77a26c30c74c826b
162 Risk Score

Malware Insights

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

The PDF file contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the critical PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=laser+guide+for+milwaukee+miter+saw', which is flagged as a malicious redirector. The SE_ADVANCE_FEE_SCAM_LURE heuristic indicates the document's content is shaped as an advance-fee fraud, likely using the lure of a prize or parcel delivery to entice clicks on the malicious link.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=laser+guide+for+milwaukee+miter+saw
    • http://fabumom.dynamogymclub.ca/uploads/1/3/1/4/131406121/bemiwu.pdf
    • http://files.gregadamsart.com/uploads/1/3/1/3/131379113/reliwowotuderawadozu.pdf
    • http://nejuva.socalteacher.com/uploads/1/3/1/4/131408899/e4f4e20.pdf
    • http://files.masterkingroofing.com/uploads/1/3/1/3/131398117/ferafabunotimi.pdf
    • https://cdn.shopify.com/s/files/1/0434/1425/7815/files/scrum_a_pocket_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16949815227.pdf
    • https://cdn.shopify.com/s/files/1/0431/0564/8801/files/alkylating_agents_mechanism_of_action.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30036161276.pdf
    • https://cdn.shopify.com/s/files/1/0431/3320/6682/files/45799751723.pdf
    • https://cdn.shopify.com/s/files/1/0432/2381/0203/files/ethiopian_aptitude_exam.pdf
    • https://cdn.shopify.com/s/files/1/0433/6130/4727/files/mopukutazitafenajig.pdf
    • https://cdn.shopify.com/s/files/1/0433/7795/0870/files/49686131640.pdf
    • https://cdn.shopify.com/s/files/1/0434/5479/1832/files/5583026799.pdf
    • https://cdn.shopify.com/s/files/1/0433/6055/1070/files/quimica_general_atkins_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0430/4361/8965/files/57412455377.pdf
    • https://cdn.shopify.com/s/files/1/0440/3019/7925/files/awaken_the_giant_within_review.pdf
    • https://cdn.shopify.com/s/files/1/0437/7057/7045/files/fazafenixabek.pdf
    • https://cdn.shopify.com/s/files/1/0428/5222/1091/files/73041079834.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_off00007441.bin
c2527f2bde09bb03fb8947ad3c76db9cde4f8b1eb79616c34f5ed8f08849dc1d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7441 5324 bytes
font_01_sfnt_off0000865c.bin
c10db9e139fc3052bb0603c3f13f1dd720e42a1e6f4a574a78a60ecb267770ed
pdf-font-stream PDF embedded font (sfnt) at offset 0x865C 10244 bytes