Malicious PDF — malware analysis report

Static analysis result for SHA-256 530d5448882c7193…

MALICIOUS

PDF

43.2 KB Created: 2020-04-08 22:28:24 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 62f106a8140fad9aab53383cf8740723 SHA-1: 138dc6dcdc641422713782151f24aedefeb2f28a SHA-256: 530d5448882c7193015bee23249748c86210294309a0133f5ce5872f6484be72
62 Risk Score

Malware Insights

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

The PDF document contains a "deep market button puzzle" lure and embeds a large number of external links, many pointing to other PDF files. This indicates a likely SEO spam or phishing campaign designed to drive traffic to malicious or deceptive websites. The heuristic firings confirm the presence of a link farm and embedded URLs, supporting this assessment.

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/1/3/0/6/130639628/130639628.html#raldbthar+deep+market+4+button+puzzl
    • http://jrequ.com/uploads/1/3/1/4/131437514/bc230e0ff9ff.pdf
    • http://cwdahlart.com/uploads/1/3/0/4/130489149/votepidega.pdf
    • http://ninaceledonio.com/uploads/1/3/0/7/130739886/dobafu.pdf
    • http://theroyalway.org/uploads/1/3/0/3/130379527/walegiripetepe_xadinafanuwo_pinagevozo_porolajuzegir.pdf
    • http://capitalmarketsskisummit.com/uploads/1/3/1/4/131408170/1515252.pdf
    • http://lomaslaperla.com/uploads/1/3/0/6/130605292/favaxu_kogurage.pdf
    • http://worldquestlive.com/uploads/1/3/0/9/130969865/jideveluno.pdf
    • http://uptowngirlblog.com/uploads/1/3/0/9/130969742/lonitava-pisemapoxegi-bowiwig-nutew.pdf
    • http://housecallvisitbydrpham.com/uploads/1/3/0/5/130588921/1253410.pdf
    • http://ashtoninsuranceagents.com/uploads/1/3/0/4/130477126/0a1a5b.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_off000082e0.bin
ce183ed4e5b524d9afd987eed20fdcb1074303262556b32007dbcc15a04016af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82E0 7344 bytes

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