Malicious PDF — malware analysis report

Static analysis result for SHA-256 24df2dfe364069bd…

MALICIOUS

PDF

85.5 KB Created: 2020-08-05 08:46:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 98446d1980b982cf99d220cabcd75f83 SHA-1: 16b31815aa93bed18ad0f2c5667c801a38fc706b SHA-256: 24df2dfe364069bdf2858079ae93364402265ac0e99c89fbf80750774043baeb
150 Risk Score

Malware Insights

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

The PDF contains multiple external links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the text 'Bhopal map pdf' and the malicious URL 'https://ttraff.com/pify?keyword=bhopal+map+pdf', suggesting a lure to a malicious site. The presence of a link farm and ML classification further support its malicious nature.

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=bhopal+map+pdf
    • http://files.ipmsipswich.com/uploads/1/3/1/4/131436956/41e32823e0.pdf
    • http://files.loveleighart.com/uploads/1/3/0/7/130776346/b9cebbaa731.pdf
    • http://files.edgeproductions.ca/uploads/1/3/0/7/130740049/f4189b.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/64831632673.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37144816260.pdf
    • https://cdn.shopify.com/s/files/1/0435/3117/4039/files/embedded_on_http_docs._google._com.pdf
    • https://cdn.shopify.com/s/files/1/0427/4877/2519/files/rezubiwamefe.pdf
    • https://cdn.shopify.com/s/files/1/0430/2825/0781/files/666394004.pdf
    • https://cdn.shopify.com/s/files/1/0437/3292/6615/files/free_evinrude_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/4837/8280/files/nigizeriluju.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/podufa.pdf
    • https://cdn.shopify.com/s/files/1/0440/9550/4536/files/32827898414.pdf
    • https://cdn.shopify.com/s/files/1/0430/9306/5877/files/busiwexawifoxokumuni.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2a7.bin
4fe38b5e52960120c2bc4a232b1d01777875c25c3c323eb3a5cee96dc2be759b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE2A7 4492 bytes
font_01_sfnt_off0000f1e5.bin
17909850d26d91d7b5c320f0298cf5471b3d704acc9f903cab5a15dd1d1f75e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E5 16640 bytes
font_02_sfnt_off00012592.bin
ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12592 16164 bytes
font_03_sfnt_off00013aab.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13AAB 4324 bytes

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