Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c251c3da358720e…

MALICIOUS

PDF

43.9 KB Created: 2020-03-08 04:28:41 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7df111850d50d2d4191dc9b37d6c6c10 SHA-1: 809e89cb6722010564543eb4a64ea2a285bf8255 SHA-256: 8c251c3da358720ee11e0e277f38d2ec2d3dbb530eea4ff44a3aecd24ff61d4a
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are hosted on unrelated domains and appear to be part of a link farm. The document body, though corrupted, contains a reference to 'Pmbok guide sixth edition summary' and includes URLs that mimic this lure. The primary intent appears to be directing users to these external sites, which are likely used for phishing or distributing further malware. No scripts were extracted from this sample.

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://74-123-75-228.mgwnet.com/uploads/1/3/0/5/130551839/130551839.html#pmbok+guide+sixth+edition+summary
    • http://youthmetro.org/uploads/1/3/0/5/130551050/nozidinos.pdf
    • http://torranceheating.net/uploads/1/3/0/5/130589131/7233530.pdf
    • http://daniels-eplaw.com/uploads/1/3/0/6/130639231/5613747.pdf
    • http://swingersattic.com/uploads/1/3/0/6/130622114/dajomewegu.pdf
    • http://mta-sts.mx.justusgirlsmp.org/uploads/1/3/0/6/130605017/gewibinum.pdf
    • http://derrettphoto.com/uploads/1/3/0/5/130550781/a7fb50.pdf
    • http://bullseyeleatherworks.com/uploads/1/3/0/4/130476075/a34f95568.pdf
    • http://www.superdrywaterproofing.com/uploads/1/3/0/6/130603692/6459514.pdf
    • http://www.benchmarkrealestatebrokers.com/uploads/1/3/0/7/130776033/70e7da5eb51c366.pdf
    • http://ghsbands.com/uploads/1/3/0/5/130589231/fuwuse.pdf
    • http://formationsmarylinetravers.com/uploads/1/3/0/3/130324063/bubabepogapewot.pdf
    • http://macs502.com/uploads/1/3/0/6/130604630/1771596.pdf
    • http://www.compassionate-counseling-consulting.com/uploads/1/3/0/6/130620567/wiwikuf-ruraleronu.pdf
    • http://amazoni.org/uploads/1/3/0/5/130539979/c23386b589eb9.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_off00007e24.bin
4b3bd775e3acb47b7256ebed260b0bc1e138a2dbd4f04cd0c6d204ec87c4acf9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E24 9108 bytes

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