Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9a173f1addad217…

MALICIOUS

PDF

45.0 KB Authoring application: Karbon
MD5: ad863969b1a7f234300204759d3ce91b SHA-1: 5653754615ee30470465c99d080e5f4af3d2c043 SHA-256: e9a173f1addad217bc0fa92f98fd589a2c431818a4e89b82150c063422a1dfd0
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to other PDF files hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or SEO abuse.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://longhorncaverns.org/uploads/1/3/0/6/130620934/7517428.pdf
    • http://teamthomason.net/uploads/1/3/0/2/130291352/rurefisilu_nulugojogen_buxot.pdf
    • http://jhonblack.net/uploads/1/3/0/7/130739387/renolow.pdf
    • http://mail.aviscafineart.com/uploads/1/3/0/6/130620632/5cc2f98831.pdf
    • http://autodiscover.susanfogarty.com/uploads/1/3/0/7/130739875/fofegi.pdf
    • http://74-123-78-133.mgwnet.com/uploads/1/3/0/5/130590215/terinabav.pdf
    • http://montalvinmanor.org/uploads/1/3/0/6/130640097/kolexekapumuzekusu.pdf
    • http://www.gaymexi.co/uploads/1/3/0/5/130551271/zewufurat-dexafaju-rofosetet.pdf
    • http://www.vinylatm4ud.com/uploads/1/3/0/8/130814288/bajexo-tovakawipuf-togemebe.pdf
    • http://sweetdreamsdelight.org/uploads/1/3/0/5/130590367/bitejiz.pdf
    • http://bestgeekdeals.com/uploads/1/3/0/4/130483513/5859708.pdf
    • http://www.mudfences.com/uploads/1/3/0/7/130776151/6133568.pdf
    • http://www.kbkillebrew.com/uploads/1/3/0/5/130539247/nozosoli_lajanov_zujosijev.pdf
    • http://melatonindosierungen.com/uploads/1/3/0/6/130621772/raxox.pdf
    • http://rgbgrasstunes.com/uploads/1/3/0/5/130543173/lagar.pdf
    • http://laramillsteed.com/uploads/1/3/0/6/130603760/linufijuralajawun.pdf
    • http://alrummannursery.com/uploads/1/3/0/6/130639305/6214534.pdf
    • http://oyegeneralmotors.com/uploads/1/3/0/8/130814172/b8c55b5417.pdf
    • http://nursinghomepj.com/uploads/1/3/0/7/130775047/fumilidodax.pdf
    • http://pfgzq.slpny.com/uploads/1/3/0/5/130588347/130588347.html#2+bit+full+adder+using+cmos
    • http://melatonindo

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000041b1.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x41B1 2652 bytes
font_01_sfnt_off00004e27.bin
09846a726068a99118f585e94fb65c74ac3ce7f73fb163a5f455e7095db6c217		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E27 9012 bytes

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