Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d0f5d479c07a63c…

MALICIOUS

PDF

46.5 KB Created: 2020-04-13 07:01:10 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 5a22e09d4f7ef06cadb2fe5b23033764 SHA-1: 05db478e9532833719427d97bcb5874ebdc87d9d SHA-256: 9d0f5d479c07a63c21ce947151f6055286e1df75fff903b9618d6e20c176fb21
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, many of which point to PDF files on various domains, indicating a link farm or SEO manipulation tactic. One of the embedded URLs, http://stratford-hvac.com/uploads/1/3/0/7/130776676/130776676.html#2000+honda+trx450r+oil+capacity, is directly associated with the document's content. The heuristic 'PDF_SEO_LINK_FARM' strongly suggests this is not a legitimate document but rather a mechanism to distribute links.

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://stratford-hvac.com/uploads/1/3/0/7/130776676/130776676.html#2000+honda+trx450r+oil+capacity
    • http://woodinlabradoodles.com/uploads/1/3/0/5/130588475/nodop.pdf
    • http://ricetruckingrepair.com/uploads/1/3/0/3/130379674/fd2b0782b0.pdf
    • http://wpanc.org/uploads/1/3/0/7/130775021/jaxipevosulisadimuki.pdf
    • http://cptoffice.com/uploads/1/3/0/5/130551059/xumogodarovelezewin.pdf
    • http://truestoryretreat.com/uploads/1/3/1/4/131408928/7509235.pdf
    • http://cdssocal.com/uploads/1/3/0/5/130550775/bejuvanuzolepom.pdf
    • http://theartistinsideme.com/uploads/1/3/0/8/130873875/6778857.pdf
    • http://womenofwakanda.net/uploads/1/3/1/4/131453179/6884826.pdf
    • http://nancyspolishing.com/uploads/1/3/0/9/130969511/bozitipufawomid-kevejozadagipa.pdf
    • http://commercialvehiclesdirectuk.com/uploads/1/3/0/4/130435819/d28ba9ec657.pdf
    • http://nancyspolishing.com/uploads/1/3/0/9/130969511/bozitipufawomid-k
    • 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_off0000766f.bin
0f616607f98f738ad898cb0c0eb455a236eab1cb9997f73aa82d60847291d8e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x766F 9128 bytes
font_01_sfnt_off0000991e.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x991E 16036 bytes

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