Malicious PDF — malware analysis report

Static analysis result for SHA-256 3057f2d41f30f1a1…

MALICIOUS

PDF

47.3 KB Created: 2020-07-31 23:38:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 742af1484e54f015839834fe8f4b111c SHA-1: 3b4a9b999ee13a5c4f86cf8d8339950047e9945e SHA-256: 3057f2d41f30f1a1074171104589351a304de51390b706e87f48b92f9a7d05f1
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'acs practice exam organic chemistry' and the malicious URL itself. This suggests a phishing or scam attempt where the user is enticed to click the link under the guise of educational material, leading them to a malicious site.

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=acs+practice+exam+organic+chemistry
    • http://files.waltpadgett.com/uploads/1/3/2/3/132302998/c8a4c389ad.pdf
    • http://files.brianpatrickotoole.com/uploads/1/3/2/6/132680855/2d2093e384.pdf
    • http://files.reyamore.com/uploads/1/3/2/8/132814518/jowexejub_zareriwamud_wirikepe.pdf
    • https://cdn.shopify.com/s/files/1/0432/8531/5744/files/loxawevezobebizosox.pdf
    • https://cdn.shopify.com/s/files/1/0432/0926/1218/files/3074610751.pdf
    • https://cdn.shopify.com/s/files/1/0431/1433/2309/files/ronejawoz.pdf
    • https://cdn.shopify.com/s/files/1/0433/2797/9678/files/mitewadesamadeguzofuvojol.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gaxedisurerikemamezawapux.pdf
    • https://cdn.shopify.com/s/files/1/0439/5306/2043/files/xularenar.pdf
    • https://cdn.shopify.com/s/files/1/0434/0980/1365/files/22074350981.pdf
    • https://cdn.shopify.com/s/files/1/0431/0004/5469/files/dazumedejoniwaf.pdf
    • https://cdn.shopify.com/s/files/1/0435/1682/1672/files/22544731767.pdf
    • https://cdn.shopify.com/s/files/1/0433/0071/6694/files/20888478859.pdf
    • https://cdn.shopify.com/s/files/1/0431/5417/8216/files/65088673667.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/
    • https://cdn.shopify.com/s/files/1/043

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c6b.bin
9a0931d8fb2980711e456eba92c748b30b668c130638aa4a7e747ebe6cc89cd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C6B 5264 bytes
font_01_sfnt_off00007e21.bin
5e558efcd7f1bd34372eb04f1c1280508d90af0d7c1af1f0cced9573ee36ec3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E21 10368 bytes
font_02_sfnt_off0000a18e.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA18E 4324 bytes

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