Malicious PDF — malware analysis report

Static analysis result for SHA-256 57956ce9885a9197…

MALICIOUS

PDF

37.2 KB Created: 2020-08-26 14:45:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e9cd1a9aa1530899390ef2a1c8a194d SHA-1: 0726da778eccf4ecc2d4813a3f85ee1594736150 SHA-256: 57956ce9885a91975d77cceaf66a4c0e9f7ee198267ec22fd2a566b3dbb8140d
150 Risk Score

Malware Insights

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

The PDF document exhibits malicious behavior through a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=rust+base+blueprints'. Additionally, it contains a large number of external PDF links, identified as a PDF SEO link farm. The ML classifier also strongly flagged this PDF as malicious. These factors suggest the document is designed to lure users through deceptive content or SEO tactics, potentially leading them to malicious infrastructure.

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=rust+base+blueprints
    • http://files.richquinlan.com/uploads/1/3/0/9/130969211/virelekig-mavis-mupagup.pdf
    • http://files.kelseyingham.com/uploads/1/3/1/4/131483034/jofamisibufobet.pdf
    • http://bolefa.jeelsphoto.com/uploads/1/3/1/3/131398440/ligaramo_dudixivebonu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1583/0695/files/95929782223.pdf
    • https://cdn.shopify.com/s/files/1/0430/8366/1461/files/17701282078.pdf
    • https://cdn.shopify.com/s/files/1/0437/1863/9765/files/bozolebi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30106301206.pdf
    • https://cdn.shopify.com/s/files/1/0435/5204/7272/files/37362460248.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/easy_learning_mandarin_chinese_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0429/9004/3287/files/bigagurab.pdf
    • https://cdn.shopify.com/s/files/1/0430/5167/9893/files/network_security_policy.pdf
    • https://cdn.shopify.com/s/files/1/0435/1187/3688/files/california_critical_thinking_skills_test_cctst.pdf
    • https://cdn.shopify.com/s/files/1/0432/8806/8254/files/pinnacle_industries_ltd_annual_report.pdf
    • https://cdn.shopify.com/s/files/1/0432/7338/8190/files/1984258585.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/52325197595.pdf
    • https://cdn.shopify.com/s/files/1/0432/1030/9787/files/gemojegemopejotetuwijet.pdf
    • https://cdn.shopify.com/s/files/1/0435/5666/7541/files/zirafo.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_off0000557a.bin
7540f6279fed3f8ddd5cdb927d4192ae79e332bf7828af79f798ed19c7c4ede7
pdf-font-stream PDF embedded font (sfnt) at offset 0x557A 4960 bytes
font_01_sfnt_off00006661.bin
6a5bf763e906324fe4237d83d1d9c2ffcf2fcecd4b21bf5e2ac8ffb5252fd33a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6661 9904 bytes