Malicious PDF — malware analysis report

Static analysis result for SHA-256 8de046ed93936623…

MALICIOUS

PDF

39.4 KB Authoring application: Mobipocket Creator
MD5: 1153f9dccdf5fbdf5b28ee376e5c226d SHA-1: fde22f54a526e90764061307756c1b2631e8467f SHA-256: 8de046ed93936623f1b6ff0d79829b3f702607799ad61c4fcfbd3b8ed12c347c
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links to other PDF files hosted on various domains, a technique commonly used for SEO poisoning or distributing malicious content. The heuristic 'PDF_SEO_LINK_FARM' and ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' strongly indicate a malicious intent. The document body, though heavily obfuscated, contains URLs that are part of this link farm, suggesting the primary purpose is to redirect users to these external resources, likely for phishing or malware download.

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://determinedtolearn.info/uploads/1/3/0/6/130604391/6363254.pdf
    • http://artofitness.com/uploads/1/3/0/6/130621509/metewarezeg.pdf
    • http://wildoncherrysalon.com/uploads/1/3/0/5/130548152/jalopaburewozem_tobub.pdf
    • http://circle-m-consulting-llc.com/uploads/1/3/0/5/130589085/8646155.pdf
    • http://seedtoatree.com/uploads/1/3/0/2/130288545/somonepun-vidomubos-kanakisesa-kebosuralazif.pdf
    • http://astrologyandcrystallighttherapy.com/uploads/1/3/0/7/130739143/kanorumed.pdf
    • http://nytsattui.com/uploads/1/3/0/6/130603968/begabezidukitukevo.pdf
    • http://opalwolf.com/uploads/1/3/0/6/130639309/korujijadu_kixenabujipu.pdf
    • http://moncrieffekallai.org/uploads/1/3/0/7/130775106/5d1ee.pdf
    • http://fcalynn.org/uploads/1/3/0/3/130379548/8127138.pdf
    • http://susan-ritz-art.com/uploads/1/3/0/7/130739570/luxusamid.pdf
    • http://dapip.landysheva.ru/uploads/2020/01/27/nokilanobagenudu.pdf
    • http://misssoutheastpageantry.us/uploads/1/3/0/5/130541186/130541186.html#cisco+packet+tracer+7.+1++google+drive

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000014aa.bin
89ba417ddac57fc99c71068373a622c54d16bb588f14d39bbc4339aa35afec67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14AA 11412 bytes

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