Malicious PDF — malware analysis report

Static analysis result for SHA-256 e091316c1fc5c7a4…

MALICIOUS

PDF

72.4 KB Created: 2020-09-08 13:40:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 140c8224760738acf3cf3f59576fb62a SHA-1: 39995500bec4ed8dda2acc261477fdf5f6f39cd9 SHA-256: e091316c1fc5c7a491a4d839edc7a170cb428fb6c1f085c0d9784a4204e2d3b6
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.me'. This URL is also present in the document body, suggesting it's the primary lure. The PDF also exhibits characteristics of a link farm, with numerous embedded links to Shopify domains, though these appear benign. The ML classifier strongly indicates maliciousness. The overall pattern suggests a phishing or malware delivery attempt disguised as legal reports.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.me/wix?keyword=defilement+kenya+law+reports
    • https://cdn.shopify.com/s/files/1/0434/9027/9574/files/23656292668.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/trusting_god_jerry_bridges_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/1157/8776/files/ratiwidaxoji.pdf
    • https://cdn.shopify.com/s/files/1/0434/8110/4541/files/realistic_gun_sounds_gta_5.pdf
    • https://cdn.shopify.com/s/files/1/0432/3088/8094/files/dopaxixoterimim.pdf
    • https://cdn.shopify.com/s/files/1/0430/4162/0119/files/worofugemejuzumezedu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4341/3407/files/gaxutekilatajasi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/gidenatowirad.pdf
    • https://cdn.shopify.com/s/files/1/0430/1144/0803/files/62678910205.pdf
    • https://cdn.shopify.com/s/files/1/0428/9688/3868/files/82281910885.pdf
    • https://cdn.shopify.com/s/files/1/0430/2379/4337/files/sosiruperagulufotixokakuk.pdf
    • https://cdn.shopify.com/s/files/1/0454/2480/3996/files/99497371161.pdf
    • https://cdn.shopify.com/s/files/1/0430/8100/7255/files/pixoveterobagitajasapanik.pdf
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/togosiruxaviwegar.pdf
    • https://cdn.shopify.com/s/files/1/0431/6138/7170/files/resafetuvadanibasirezan.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37263727017.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_off0000e02b.bin
57576ca163176deae80011b4005448297d97b3a6b9736fdc11a710f7de12371e
pdf-font-stream PDF embedded font (sfnt) at offset 0xE02B 5304 bytes
font_01_sfnt_off0000f244.bin
5b3a681f8ac658522397db9a19a10220b30a56e2b5759d4f5a0ff85fe9814f92
pdf-font-stream PDF embedded font (sfnt) at offset 0xF244 10076 bytes