Malicious PDF — malware analysis report

Static analysis result for SHA-256 200b05f436617242…

MALICIOUS

PDF

51.8 KB Created: 2020-09-11 07:30:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 027934619995af0b14c50a8426ffb28b SHA-1: e0b512bbbdd6e84a897be0745d7febc755b28e18 SHA-256: 200b05f436617242fa529430f74b4cc2488baeea9ec02cd0bf31217ca9ee1313
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm or SEO poisoning tactic. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though partially corrupted, contains text related to a 'John Deere 325 skid steer service manual', which is likely a lure to encourage users to click the malicious link. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/wb?keyword=john%20deere%20325%20skid%20steer%20service%20manual
    • http://files.brookespatol.com/uploads/1/3/0/7/130738928/nuriwedi_xikodezafetifas_beruxirududo_bixeg.pdf
    • http://fazipixa.benbibleinsta.com/uploads/1/3/1/4/131453870/659092.pdf
    • http://files.rinsart.com/uploads/1/3/1/4/131411688/3706162.pdf
    • http://files.charmcitypetcrematory.com/uploads/1/3/2/7/132740352/jodilosorelew-tifirukulamul.pdf
    • https://cdn.shopify.com/s/files/1/0463/7717/3147/files/tizunovedibasevukoxu.pdf
    • https://cdn.shopify.com/s/files/1/0435/8651/9195/files/70167397004.pdf
    • https://cdn.shopify.com/s/files/1/0434/6635/8934/files/35396825313.pdf
    • https://cdn.shopify.com/s/files/1/0428/4612/6247/files/antivirus_avira_pro.pdf
    • https://cdn.shopify.com/s/files/1/0432/0985/1048/files/bugokaxiz.pdf
    • https://cdn.shopify.com/s/files/1/0431/3245/3015/files/danivunigegudojewo.pdf
    • https://cdn.shopify.com/s/files/1/0428/2528/5791/files/dukuwilugepewulizibexanu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8942/8637/files/mubupovukewapipibemi.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_off000085b8.bin
e8ef890acb772c9f9b2c532b81956ae25fb1bb4da3a9717df5d752f24d020214		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85B8 5712 bytes
font_01_sfnt_off000098f9.bin
345f7d09bf6de06d93c203752e8daff2da30b49d915b8329e94eecc7873e5f5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98F9 13236 bytes

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