Malicious PDF — malware analysis report

Static analysis result for SHA-256 d667e949f2d4fb3b…

MALICIOUS

PDF

41.3 KB Created: 2020-08-08 06:29:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 628b7273dda0ea01a584f8e0a7f8568b SHA-1: f8dbfc2ce4247cb5d9e0d51eb5a6e0aa6f2d6e10 SHA-256: d667e949f2d4fb3bcd707ca4fe40007097d28376e85a9481b114b3964106f1bf
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary link pointing to a known malicious redirector at https://ttraff.ru/wb?keyword=portrait%20drawing%20books%20pdf. This indicates a phishing or scam attempt designed to redirect users to malicious content. The document body, though heavily corrupted, contains text related to 'Portrait drawing books pdf' and the wkhtmltopdf application, suggesting a lure to download or view such content. No scripts were extracted from this sample.

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/wb?keyword=portrait%20drawing%20books%20pdf
    • http://files.ewindfly.shubayr.net/uploads/1/3/0/8/130813639/kepusupomasuk.pdf
    • http://files.globalcenterforsuccess.com/uploads/1/3/0/7/130740257/sebak-doxatelak.pdf
    • http://files.phazetheory.com/uploads/1/3/1/4/131454109/70fb882e3.pdf
    • http://files.northcentralcivitans.org/uploads/1/3/1/4/131408142/6798355.pdf
    • https://cdn.shopify.com/s/files/1/0430/1560/2339/files/5351087286.pdf
    • https://cdn.shopify.com/s/files/1/0427/7967/2735/files/20882091066.pdf
    • https://cdn.shopify.com/s/files/1/0435/8638/8136/files/gasajuxaro.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87277754858.pdf
    • https://cdn.shopify.com/s/files/1/0433/5245/7369/files/windows_loader_2._3._0.pdf
    • https://cdn.shopify.com/s/files/1/0432/1892/7778/files/sulugasapakagis.pdf
    • https://cdn.shopify.com/s/files/1/0433/5940/4197/files/rajozojaxopoxatedew.pdf
    • https://cdn.shopify.com/s/files/1/0432/1627/3563/files/92520588019.pdf
    • https://cdn.shopify.com/s/files/1/0432/9881/6160/files/all_english_grammar_exercises_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tobilefoseparavako.pdf
    • https://cdn.shopify.com/s/files/1/0431/7229/8918/files/fagimuf.pdf
    • https://cdn.shopify.com/s/files/1/0432/2784/0675/files/46111129926.pdf
    • https://cdn.shopify.com/s/files/1/0433/1274/2550/files/29890653828.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_off0000631c.bin
93a0141ad8eb4721fd6d71967ea69da734d44b1a04df5ad1877a4c9d03db64b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x631C 5476 bytes
font_01_sfnt_off000075d9.bin
d547e2ca4b3136518433775e6f1e7a9b8b4bf9dc32a8a6740cb65ffaade75652		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75D9 10064 bytes

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