Malicious PDF — malware analysis report

Static analysis result for SHA-256 c247ce7461934389…

MALICIOUS

PDF

142.5 KB Created: 2020-06-19 23:50:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ed6d14d952ed27624c5cd5b1a0ace95 SHA-1: 15b80ad660ffb14627fc06f3cc2cdad2b7af578a SHA-256: c247ce74619343899b798f450ad5fda9b2424a5cf86a849bf114cba3b6939462
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to other PDF files hosted on various domains. The document body itself is heavily obfuscated but contains a reference to 'Cohesion in English Halliday and Hasan PDF' and an embedded URL, suggesting a lure to a content-related phishing or SEO spam campaign. The heuristic 'PDF_SEO_LINK_FARM' strongly indicates this is an attempt to generate traffic or distribute malicious content through a network of linked PDFs.

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://littleblessingsofanoka.com/uploads/1/3/0/8/130873998/130873998.html#cohesion+in+english+halliday+and+hasan+pdf
    • http://camingroup.ca/uploads/1/3/0/8/130873736/d458ea8.pdf
    • http://hostmaster.ndta.ca/uploads/1/3/0/4/130483279/204890.pdf
    • http://hostmaster.ecocare.co.za/uploads/1/3/0/6/130620202/mosarefufugevezo.pdf
    • http://rew4you.com/uploads/1/3/1/4/131406821/1575575.pdf
    • http://domvicsam1.org/uploads/1/3/0/6/130621687/dekele_femamulus.pdf
    • http://tjrothconstruction.com/uploads/1/3/0/4/130483477/vufexisedadeg.pdf
    • http://gavinheathpt.com/uploads/1/3/0/5/130590538/rijabebupux.pdf
    • http://74-123-78-212.mgwnet.com/uploads/1/3/0/5/130539373/zepazakutuzitum.pdf
    • http://lasvegashousevalues.com/uploads/1/3/1/0/131070080/xoduwoxetafuroxiki.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014b34.bin
efb9fb4b0b1303c3ca9c0ccb39085d7ff0cf6d467b1e961444a5ab40a89ae7d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14B34 5040 bytes
font_01_sfnt_off00015c56.bin
cbc6baf69b4eff1f90efb3f8d67e6f767e71aa0024c303fa89d7e8a41d00b4c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15C56 21976 bytes
font_02_sfnt_off00017fb0.bin
447c0bdc04c9708a9a7614fcdf5d96b6b858b555e0a194f61879b879e660b651		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17FB0 4180 bytes
font_03_sfnt_off00019017.bin
1b433cc8db6a66b289fed1fddbc48f9268002d09a26d11597042099fa192e22f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19017 11596 bytes
font_04_sfnt_off0001b68f.bin
92797552fcf254ca378e5fe733d88ebb80dfc2581fe2706021fbf6bdbd066c5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B68F 53136 bytes

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