Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4b336bb8e0364ad…

MALICIOUS

PDF

64.8 KB Authoring application: Karbon
MD5: 80525664a6fd583aa234c54138ec1444 SHA-1: 65b2c882cd9d6e5e201310d08b552aa786b529c1 SHA-256: b4b336bb8e0364add15ae6e9f6a52e4985421676a5476e09f0c7d76b3727d566
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a phishing or SEO spam campaign, as indicated by the 'PDF_SEO_LINK_FARM' heuristic. It contains a large number of embedded external links, with the primary domain being '1cafedumarche.ch'. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the malicious classification. The document body is heavily obfuscated and does not provide clear textual lures.

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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://1cafedumarche.ch/uploads/1/3/0/4/130435571/e5c21b07ff1770b.pdf
    • http://luciaventuraaa.com/uploads/1/3/0/5/130589080/3dd72100899.pdf
    • http://dawpropertiesllc.net/uploads/1/3/0/2/130271081/lafikigubupifo_febofufugogizu_perupu.pdf
    • http://holypostapp.org/uploads/1/3/0/3/130313123/1321839.pdf
    • http://bpacontractorsme.com/uploads/1/3/0/7/130739864/830ebf1341df1.pdf
    • http://transformationoftheheartministries.com/uploads/1/3/0/6/130604349/dumedabin.pdf
    • http://acappellakeith.com/uploads/1/3/0/5/130551456/madiguxosaku.pdf
    • http://oakridgefootballbooster.com/uploads/1/3/0/7/130775646/de6eb0b.pdf
    • http://coloradooverlandexpo.com/uploads/1/3/0/3/130323406/fedidewo-molabigozusexe-nivunizatafok.pdf
    • http://eacltdnz.com/uploads/1/3/0/9/130969221/gepedapume_puvofafuk.pdf
    • http://frankscottconsulting.com/uploads/1/3/0/5/130551564/1363110.pdf
    • http://nnetherland.com/uploads/1/3/0/6/130620760/vowunesede.pdf
    • http://yigga.com/uploads/1/3/0/3/130379458/zoloxebujofax.pdf
    • http://www.altoedc.com/uploads/1/3/0/5/130589171/130589171.html#kandhar+alangaram+lyrics+in+tamil+pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067cd.bin
4b0df308c083c1806db1a6defbf62d88f0be9d758923960d084743adb538ea5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67CD 25412 bytes
font_01_sfnt_off0000aba5.bin
8497de5cd4d13a4d65221a757079dddd4ba6a2e0d34a41bd42ffc5fc81aace0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xABA5 6100 bytes

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