Malicious PDF — malware analysis report

Static analysis result for SHA-256 f21678518b78de98…

MALICIOUS

PDF

39.8 KB Created: 2020-04-11 09:39:42 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7f8f5bd0d359bbea8d9f6930931dd6c2 SHA-1: 7d3c164a69c838142bcd6a0fa090d8d7c6919f9b SHA-256: f21678518b78de984d86d7d7b0003774ef979a767d71511dafa3a1e5aacb061c
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, many of which point to PDF files with numeric or generic slugs, indicative of a link farm. The document body and one of the extracted URLs explicitly mention downloading 'suicide squad online free', suggesting a lure for pirated content. The primary heuristic identified a link farm with 30 external PDF links, and another heuristic pointed to a specific HTML download URL.

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://74-123-75-191.mgwnet.com/uploads/1/3/0/2/130288301/130288301.html#download+suicide+squad+online+free
    • http://acosta3550.com/uploads/1/3/0/4/130435673/goladekosimep.pdf
    • http://vladtheinventor.org/uploads/1/3/0/3/130313577/89c39711eeee9a7.pdf
    • http://automatedsalesrocket.com/uploads/1/3/0/7/130738936/9053626.pdf
    • http://deeliastudios.net/uploads/1/3/0/5/130588625/sepabikapawukamenu.pdf
    • http://twoutdoorservices.com/uploads/1/3/0/4/130435881/2727557.pdf
    • http://newedgepartners.com/uploads/1/3/1/3/131398020/b1d7e405b2fcf2.pdf
    • http://holysolar.net/uploads/1/3/1/3/131397942/wudakapuboropomuze.pdf
    • http://faithandsimplicityblog.com/uploads/1/3/0/3/130324075/2ad3c6ffec.pdf
    • http://perfumesconferomonas.com/uploads/1/3/0/4/130476104/kedurawerijitibegone.pdf
    • http://steamnyc.com/uploads/1/3/0/4/130478261/jawimib-rabujigisosaza.pdf
    • http://creativecrossesbykatrina.com/uploads/1/3/1/0/131071164/puwolewil.pdf
    • http://senaselections.com/uploads/1/3/1/1/131163590/gevoroluje.pdf
    • http://anitaravishankar.com/uploads/1/3/0/6/130604429/8837158.pdf
    • http://archiehardin.com/uploads/1/3/0/4/130435652/soguluzugobab.pdf
    • http://personaltrainer-oldenburg-rob.de/uploads/1/3/1/3/131398264/8075013.pdf
    • http://archiehardin.com/uploads/1/3/0/4/1304356
    • 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_off0000726d.bin
1fb384fb8cc2a0e000f05928f7326fda2c31367e34ea3114d3840791a090890e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x726D 8200 bytes

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