Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d61b13ae7b38e6d…

MALICIOUS

PDF

34.8 KB Created: 2020-08-15 05:45:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b0d09706d533412158ab6bb7d100b5d SHA-1: 8dc85f60155049e4227cf400ca241c7d3049d8a3 SHA-256: 9d61b13ae7b38e6da79d03660df02cd80ead6f91eb0916412eafaa8d4c6fddd3
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wb?keyword=ring%20video%20doorbell%20pro%20owners%20manual'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains. The document body, though partially corrupted, contains text related to a 'Ring video doorbell pro owners manual' and the malicious URL, suggesting a lure to a potentially malicious site disguised as a manual download. 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=ring%20video%20doorbell%20pro%20owners%20manual
    • http://files.farberresumes.com/uploads/1/3/1/8/131871721/bojalegokopisaf-konabeso.pdf
    • http://files.aerospectech.com/uploads/1/3/1/3/131380213/180540.pdf
    • https://cdn.shopify.com/s/files/1/0434/7461/6472/files/best_reader_for_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0437/0392/6939/files/73005796314.pdf
    • https://cdn.shopify.com/s/files/1/0428/5480/9759/files/52992306716.pdf
    • https://cdn.shopify.com/s/files/1/0433/0949/8536/files/mujepuzebijavajonep.pdf
    • https://cdn.shopify.com/s/files/1/0441/2358/6712/files/bronchiectasis_treatment.pdf
    • https://cdn.shopify.com/s/files/1/0432/7889/3214/files/nonutezotulemeviluzolod.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tovovowegafakaroseras.pdf
    • https://cdn.shopify.com/s/files/1/0453/9387/1016/files/duzifodoveluvipawevetu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4872/9766/files/xagumujogefire.pdf
    • https://cdn.shopify.com/s/files/1/0434/7537/0136/files/63758074725.pdf
    • https://cdn.shopify.com/s/files/1/0433/5068/7903/files/39772727577.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_off00003fca.bin
cf6d5428174361e6484a92cfbed3a385589b640293db1d2af75b2572893306b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3FCA 5380 bytes
font_01_sfnt_off000051fa.bin
2d14f901d9a1d6376dc0f9b8d38926a42286ca11cc73fcaf195084e6ba7fff5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51FA 8984 bytes
font_02_sfnt_off0000705d.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x705D 4324 bytes

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