Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b9e5a609c67081e…

MALICIOUS

PDF

28.8 KB Authoring application: Karbon
MD5: b46ca694a53a13f58ed2d9590c0489d8 SHA-1: 46d7968966d46a99ffb97c2bd0b07a73f8f9d08b SHA-256: 9b9e5a609c67081ed6b3dd518386aa7b2bbc746ec7a8f1191f8beefcefdebf79
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. The primary indicator is a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links likely serve as a lure or redirect to malicious content, consistent with phishing or SEO-based spam campaigns. No scripts were extracted from this sample.

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://taipeifilms.com/uploads/1/3/0/2/130271167/6626814.pdf
    • http://kartell.com.vn/uploads/1/3/0/4/130483376/xijovuzefivanudu.pdf
    • http://themetalmashupradioshow.com/uploads/1/3/0/5/130589040/lulokibomumuveji.pdf
    • http://www.carterandcompanybroker.com/uploads/1/3/0/8/130814290/3860007.pdf
    • http://mail.churchoftheholyspirit.org/uploads/1/3/0/3/130313314/paxoraf.pdf
    • http://reteish.com/uploads/1/3/0/5/130551935/fatujidunuta-matopiwiduzu-gorafepumapuso-lazavode.pdf
    • http://monicajlivingston.com/uploads/1/3/0/6/130621426/9387697.pdf
    • http://www.serendipity.biz/uploads/1/3/0/2/130289291/8188031.pdf
    • http://abbeypage.wine/uploads/1/3/0/5/130538941/takaleditipid.pdf
    • http://niwawriters.net/uploads/1/3/0/5/130542953/wipirofu.pdf
    • http://womenwalkingindestiny.com/uploads/1/3/0/7/130740251/c87e86b37e9973.pdf
    • http://pchstv.org/uploads/1/3/0/6/130605432/xenuga.pdf
    • http://wibom.dk/uploads/1/3/0/4/130483480/vilamamo.pdf
    • http://visionglobalcapital.org/uploads/1/3/0/7/130776756/970f8ad.pdf
    • http://mylearning.igorrivin.com/uploads/1/3/0/5/130550895/revofevubapo.pdf
    • http://amazonpropertymanagement.us/uploads/1/3/0/6/130620267/4461149.pdf
    • http://blscontractingllc.com/uploads/1/3/0/4/130489727/1502526.pdf
    • http://sdsufiji.com/uploads/1/3/0/2/130272092/130272092.html#3m+double+sided+foam+tape+advance+auto
    • http://xmoniyn.sites.looka.com/uploads/1/3/0/2/130291922/xetifusotatuvov-nujisepuxas-butogaligu.pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001721.bin
1cdc0f1546b03508a0064018aab3e7fe4fc05718b9ede3b9b85afc5f8afdf665		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1721 6200 bytes

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