Malicious PDF — malware analysis report

Static analysis result for SHA-256 21c2a06f9a609547…

MALICIOUS

PDF

45.8 KB Authoring application: Mobipocket Creator
MD5: 31825fe0c6705c0217cd25b787aaa49b SHA-1: 8cfe1527591e6d305c34bfedc3ab2178ecbe4ccb SHA-256: 21c2a06f9a609547ab01538900ca8b63cdce868dcda2537b4b0582e1507797ff
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. This technique is often used for SEO poisoning or to distribute further malicious content. The ClamAV detection of 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious intent. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://spotonpetgrooming.com/uploads/1/3/0/5/130545493/girobarafatopigizoso.pdf
    • http://bfmix.com/uploads/1/3/0/5/130588954/nemesobosuwofigil.pdf
    • http://connorcopelandcreative.com/uploads/1/3/0/6/130639329/vewavo_lemerifuweti_nilibulolat_jorokolapi.pdf
    • http://mothermedicina.com/uploads/1/3/0/5/130590462/xibakizebo.pdf
    • http://natationlaval.com/uploads/1/3/0/4/130476505/527cdd1843c92.pdf
    • http://aldodelgado.net/uploads/1/3/0/6/130620555/2741506.pdf
    • http://lasvegashandyman.org/uploads/1/3/0/4/130490584/salivut_nodelidotuxe_puretabepo.pdf
    • http://sonsandbrothers.com/uploads/1/3/0/6/130639077/wakeradezezex-desapebe.pdf
    • http://sistereducator.com/uploads/1/3/0/6/130639528/faxifunod.pdf
    • http://4bodyandsole.com/uploads/1/3/0/6/130621152/4d8ebd.pdf
    • http://soilnstruments.com/uploads/1/3/0/4/130476804/gesitadewowivat.pdf
    • http://simscambodia.com/uploads/1/3/0/6/130621965/d889a72663325a.pdf
    • http://mychinesewatch.com/uploads/1/3/0/4/130483376/130483376.html#striking+resemblance+1997+free

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000014ac.bin
b899feadba984935f8f2e7183a4ed71ac978d8ed2395f784eca8cf6025679589		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14AC 11696 bytes

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