Malicious PDF — malware analysis report

Static analysis result for SHA-256 187e7f1291fd9216…

MALICIOUS

PDF

106.9 KB Authoring application: ImageMagick
MD5: 7610ed8ee19fb980bbbe145c996a8072 SHA-1: c9a6c0b23e5fc3c3e748699c5a32fd6733348089 SHA-256: 187e7f1291fd9216af4a5d6b10aacdb5bca42cd2ac71591e518c33f0a19a34e6
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of embedded links to external PDF files hosted on various domains, indicating a link farm or a distribution mechanism for further malicious content. ClamAV detected this as Pdf.Phishing.TtraffRobotInstall, and a machine learning classifier also flagged it as malicious. The document body text is heavily corrupted and does not provide clear intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://calledupon.com/uploads/1/3/0/4/130435945/xegagunelibo.pdf
    • http://lholmesnycschools.com/uploads/1/3/0/6/130620209/nozixom_tuxajewakukoka.pdf
    • http://axelnilsson.net/uploads/1/3/0/5/130543684/9324895.pdf
    • http://tjscatering44.com/uploads/1/3/0/3/130379326/9650099.pdf
    • http://moellerbrewhouse.com/uploads/1/3/0/2/130289291/a12a0.pdf
    • http://florencesaude.com/uploads/1/3/0/4/130476619/6970888.pdf
    • http://agedanddistilled.com/uploads/1/3/0/7/130739480/fivadunovunuberari.pdf
    • http://iwa-crosscountryrobotics.com/uploads/1/3/0/8/130874247/lapugapufuwogajo.pdf
    • http://insideou.net/uploads/1/3/0/4/130489262/wabuzaluxusovoper.pdf
    • http://collaborativeservice.com/uploads/1/3/0/7/130739688/lukoji.pdf
    • http://bonpera.com/uploads/1/3/0/5/130539553/48a5b127ee7.pdf
    • http://areaair.space/uploads/1/3/0/5/130541846/615601.pdf
    • http://numberoneagira.com/uploads/1/3/0/5/130588695/2466689.pdf
    • http://saulttranssupport.com/uploads/1/3/0/2/130287463/jevanuz_wadazulosomer.pdf
    • http://eaugur.com/uploads/1/3/0/5/130590287/dedijedujiwupedi.pdf
    • http://babyboot.com.au/uploads/1/3/0/3/130379447/pabezaxanozo_kavon_bubigijezigefid_lavixosovu.pdf
    • http://be-you-tiful.me/uploads/1/3/0/6/130605115/lufovotole.pdf
    • http://academic.surgery/uploads/1/3/0/4/130483753/2000757.pdf
    • http://www.myyogatribu.com/uploads/1/3/0/5/130544584/worawefixadetom-xadepukewe-nigajazapamov.pdf
    • http://cimisupport.com/uploads/1/3/0/4/130488223/gitoropaju.pdf
    • http://www.termdirect.com/uploads/1/3/0/3/130323126/fdb76ad.pdf
    • http://my-zero-stress.com/uploads/1/3/0/7/130776037/mozeresefetixavafo.pdf
    • http://shannonkerseytherapist.com/uploads/1/3/0/8/130814179/kevedemafowuzes.pdf
    • http://www.hppubliclibrary.org/uploads/1/3/0/6/130621663/8887899.pdf
    • http://sokaproject.com/uploads/1/3/0/8/130873916/pefafuvafa-koruv-tesikanoba.pdf
    • http://taiyangchengjiawangbaosha.br3h.com/uploads/1/3/0/7/130740325/130740325.html#antisocial+personality+disorder+is+associated+with+quizlet

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001fde.bin
c2f428be3f44115189c10dcc2a095f483e90327c2cb140eef524fe4f32be823d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1FDE 9088 bytes

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