Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8b0c717d3fd7291…

MALICIOUS

PDF

40.1 KB Created: 2020-03-21 11:42:26 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8c08be694e479e5b9d13a8c4f6757b6e SHA-1: 07295a806617da2e15fe3063e1b7f70815df7762 SHA-256: f8b0c717d3fd729162d58ae58e0bd618315144a5074c00acda57d9edcbcb4c1f
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a technique often used for SEO spam or to direct users to malicious sites. The document body, though partially corrupted, contains text related to a timer circuit and application metadata, suggesting a lure to disguise the malicious intent. The primary heuristic identified a link farm, indicating a coordinated effort to distribute links across multiple domains.

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://weirdtoyfaktory.com/uploads/1/3/0/4/130489776/130489776.html#circuito+temporizador+con+555+y+rele
    • http://www.plastercovingshop.com/uploads/1/3/0/8/130814219/35fa6db.pdf
    • http://www.cash-savvy.com/uploads/1/3/0/5/130543065/weleker.pdf
    • http://starvalleygeology.com/uploads/1/3/0/2/130270901/c07788e9fa2.pdf
    • http://opbaspartans.com/uploads/1/3/0/4/130488851/tinoxesadebanobofona.pdf
    • http://northeastwaterdamage.net/uploads/1/3/0/6/130639745/sonilusaxinojewa.pdf
    • http://groupejobinassurances.ca/uploads/1/3/0/6/130605179/mijivulilemuda.pdf
    • http://seedtoatree.com/uploads/1/3/0/5/130550983/81c29d6f.pdf
    • http://www.thaneluimpactconsulting.com/uploads/1/3/0/4/130489230/2354565.pdf
    • http://www.specscoffee.com/uploads/1/3/0/2/130274319/3727568.pdf
    • http://holy-post.net/uploads/1/3/0/7/130776074/bawuxemi.pdf
    • http://www.interiorlifestyle-tokyo2019.com/uploads/1/3/0/2/130273766/7479410.pdf
    • http://campkinky.com/uploads/1/3/0/6/130639071/5714462.pdf
    • http://cosmicandkismet.com/uploads/1/3/0/2/130289692/6769412.pdf
    • http://sheronneblasi.org/uploads/1/3/0/7/130738847/6315131.pdf
    • http://curvaceouscoutureweddingdresses.com/uploads/1/3/0/7/130739375/7543886.pdf
    • http://thedollhousellc.com/uploads/1/3/0/6/130604812/22fd37579372.pdf
    • http://myrpi.info/uploads/1/3/0/4/130490609/001b2c189be8.pdf
    • http://nuggets.space/uploads/1/3/0/6/130621160/rakazu.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007400.bin
7268752cb24ed71edab818f9a25a74b1e467b1538ef46dfecd4fc6bb3e800d7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7400 7972 bytes

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