Malicious PDF — malware analysis report

Static analysis result for SHA-256 5125e4bd2eafd0dd…

MALICIOUS

PDF

36.6 KB Created: 2020-04-18 08:04:47 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 858012de70c6e41580eb88710f5efa1f SHA-1: 01a2d0f801a8e535c32d568fa5836575b64d68ad SHA-256: 5125e4bd2eafd0dddaf03c59bd26644bef9829e5d84a71374b1ab82a052abd83
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to similarly structured URLs on unrelated domains. This pattern is indicative of a link farm or SEO spam campaign, designed to drive traffic to potentially malicious sites. The document body, though heavily corrupted, contains fragments suggesting it is disguised as a financial report to encourage clicks.

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://mastercouriers.net/uploads/1/3/0/7/130738565/130738565.html#msci+emerging+markets+asia+index+fact+sheet
    • http://excellence-in-action.com/uploads/1/3/1/3/131380730/noriladugaw.pdf
    • http://amplifiedsearch.info/uploads/1/3/0/9/130969448/fe346864fb3d0.pdf
    • http://soldiercreekchurchofchrist.org/uploads/1/3/0/3/130323187/76c80eaa12c9.pdf
    • http://calicoast.net/uploads/1/3/1/4/131406780/rofedoza-nopedexepa-rimisesowodi-fuduxugazu.pdf
    • http://dailyiphonetips.com/uploads/1/3/0/7/130739190/xemitafebesezuga.pdf
    • http://unishapes.net/uploads/1/3/1/4/131406811/jemegekivijisirase.pdf
    • http://beautiufulhealingart.com/uploads/1/3/0/3/130313242/3925387.pdf
    • http://oasisfirstcarellc.com/uploads/1/3/0/4/130483213/4273930.pdf
    • http://janeverplank.com/uploads/1/3/0/6/130639315/siwil.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_off000066bd.bin
fba879af699cf52c43530266e36ec23a916bf63702ba293913180b3203aaae0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66BD 8240 bytes

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