Malicious PDF — malware analysis report

Static analysis result for SHA-256 98508b1387cf9e86…

MALICIOUS

PDF

66.3 KB Created: 2020-08-25 02:11:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 435707d45198191a062879031dd185e0 SHA-1: 70f5ef8a474a162cbb938285ae9c6f09095452d9 SHA-256: 98508b1387cf9e862a7babe24552670b054cb1229bb82a8bd8fb2d4a9994d451
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=saint+seiya+awakening+character+guide'. Another critical heuristic indicates a PDF link farm, suggesting a tactic to distribute malicious content. The document body, though heavily obfuscated, contains the same lure text and the malicious URL, reinforcing the phishing attempt.

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=saint+seiya+awakening+character+guide
    • http://ravuvu.basildonbowlsassociation.com/uploads/1/3/1/0/131070718/1406519.pdf
    • http://fakamo.vcs.lglministry.org/uploads/1/3/1/4/131453267/7900af.pdf
    • https://cdn.shopify.com/s/files/1/0432/2420/3424/files/31381783453.pdf
    • https://cdn.shopify.com/s/files/1/0435/5653/6471/files/36886723599.pdf
    • https://cdn.shopify.com/s/files/1/0440/1430/5430/files/23982403366.pdf
    • https://cdn.shopify.com/s/files/1/0445/8404/2655/files/16100951945.pdf
    • https://cdn.shopify.com/s/files/1/0432/1129/2829/files/30214869556.pdf
    • https://cdn.shopify.com/s/files/1/0433/0474/7168/files/mabegut.pdf
    • https://cdn.shopify.com/s/files/1/0431/3523/8301/files/80809347878.pdf
    • https://cdn.shopify.com/s/files/1/0429/8027/8426/files/leraruxorowikibigijoxek.pdf
    • https://cdn.shopify.com/s/files/1/0432/9832/4640/files/diario_de_sesiones_asamblea_nacional_constituyente_guatemala_1985.pdf
    • https://cdn.shopify.com/s/files/1/0437/0454/9531/files/the_little_lisper.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2797/files/74285927873.pdf
    • https://cdn.shopify.com/s/files/1/0433/1094/0328/files/biochemistry_notes_for_bsc_nursing.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_off0000b64a.bin
f42b8a2e020fa51674de5736a1605819da0ce9560bd20b3d0e1b1c07678e0f7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB64A 5532 bytes
font_01_sfnt_off0000c91f.bin
0b3be633b85e5e66b38900525f186bc04b82325d1a46ba20f2bed6da8ae22a00		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC91F 16692 bytes

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