Malicious PDF — malware analysis report

Static analysis result for SHA-256 e81862d1e1f8fda5…

MALICIOUS

PDF

36.7 KB Created: 2020-04-17 09:13:18 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 5fe641dd9dddfa4da36c396126fb1de8 SHA-1: cacb73fd6047f4cf943caeafaea5e0f453fb213a SHA-256: e81862d1e1f8fda5d33d9891851282383572614f8ba34878edf379d33e39cee6
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF document contains a significant number of external links, many hosted on similar domains, indicating a link farm or SEO spam tactic. The document body, though partially corrupted, suggests a lure related to 'Cd maker software free'. The primary attack pattern involves directing users to malicious external sites via these links. No scripts were extracted, limiting the analysis of direct payload execution.

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://pgbc2019.com/uploads/1/3/0/7/130776725/130776725.html#cd+maker+software+free
    • http://leaningdogstuffies.com/uploads/1/3/1/4/131483588/d54496b7ed33.pdf
    • http://starthilfe-vergleich.de/uploads/1/3/0/6/130639335/resilupa.pdf
    • http://countrysidelawnnc.com/uploads/1/3/0/6/130620543/kunesilogumujebosew.pdf
    • http://urbanthistle.online/uploads/1/3/0/7/130775031/juzav.pdf
    • http://episcopalgenesis.com/uploads/1/3/0/5/130590400/f45f7e.pdf
    • http://blindajemedicototal.com/uploads/1/3/0/4/130476672/jumunidibogufasaruja.pdf
    • http://neoarcadian.com/uploads/1/3/1/6/131606118/nakazeganokule_pitukuzupowoneb.pdf
    • http://msvarko.com/uploads/1/3/1/0/131071175/9480f35b82e.pdf
    • http://geserto.es/uploads/1/3/0/7/130738620/ribezuwoxa-moginoxava-jegewofa.pdf
    • http://narcabuserecoverysupport.com/uploads/1/3/1/4/131406527/5e2bcf4d7b2cf.pdf
    • http://caminodesantidadsf.com/uploads/1/3/0/6/130639928/33e158e6612b0.pdf
    • http://narcabuserecoverysupport
    • 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_off00006924.bin
3b8d10363a2b344b0e76479e5297198f2a7939f4ae449132c394b5ad33a0f2ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6924 7628 bytes

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