Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce5193989d2fc17f…

MALICIOUS

PDF

41.1 KB Created: 2020-08-22 03:19:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48277201a91ec71b753f71bfcc0a0d71 SHA-1: dd53843bdcc0a42a045add04e70741a7aa1f7042 SHA-256: ce5193989d2fc17ff58b02ab7a26975e4634d8af63529e9e4fd9ba785846b89c
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector URL, indicating a phishing or scam attempt. The primary malicious URL is https://ttraff.ru/pify?keyword=csusm+sociology+major+worksheet, which likely leads to further malicious content. The document body text, though partially corrupted, suggests a lure related to a worksheet, aligning with the redirector's keyword. No scripts were extracted, limiting the analysis of direct payload execution.

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=csusm+sociology+major+worksheet
    • http://files.tonguetiepractitionerinkent.com/uploads/1/3/1/4/131438389/6b432bb8f0605b7.pdf
    • https://cdn.shopify.com/s/files/1/0437/8384/8097/files/jonufomofabedo.pdf
    • https://cdn.shopify.com/s/files/1/0446/8106/8697/files/busqueda_avanzada.pdf
    • https://cdn.shopify.com/s/files/1/0431/8245/7000/files/94722141876.pdf
    • https://cdn.shopify.com/s/files/1/0431/6217/3602/files/fifejerasoj.pdf
    • https://cdn.shopify.com/s/files/1/0427/8022/9791/files/tapuje.pdf
    • https://cdn.shopify.com/s/files/1/0432/2128/7080/files/basic_proportionality_theorem_proof.pdf
    • https://cdn.shopify.com/s/files/1/0433/1474/1413/files/72188372889.pdf
    • https://cdn.shopify.com/s/files/1/0431/0433/8073/files/tilofawuxisixaxekopifax.pdf
    • https://cdn.shopify.com/s/files/1/0430/0197/0837/files/36358709626.pdf
    • https://cdn.shopify.com/s/files/1/0440/1948/2774/files/22572959986.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005405.bin
68bc2692755f9338d975c23c19766928156a76216f1069c31ef253ccb6a0ba54		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5405 5348 bytes
font_01_sfnt_off0000664c.bin
2ae82279dc2486f68a7ad699fed1f474a480fda7ad25d18853510296462fb487		 pdf-font-stream PDF embedded font (sfnt) at offset 0x664C 10336 bytes
font_02_sfnt_off000089b0.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89B0 4324 bytes

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