Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd740fcd9c228f5a…

MALICIOUS

PDF

38.5 KB Authoring application: Mobipocket Creator
MD5: 37f54d0733d4eefa1a7a3e0422e3fbae SHA-1: 9cad0fda8aa53cb1380dc75fdd4ec7de374081b4 SHA-256: fd740fcd9c228f5a6cacb03f921936eda65e49a4f33f58e3e317d260d22b7ec3
150 Risk Score

Malware Insights

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

The PDF was flagged by ClamAV as Pdf.Phishing.TtraffRobotInstall-7605656-0 and a machine learning classifier. The heuristic PDF_SEO_LINK_FARM indicates the presence of a large number of external links, with the first being http://thisgirlsays.com/uploads/1/3/0/7/130776245/5148097.pdf. This suggests the document is designed to manipulate search engine results or redirect users to malicious sites.

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://thisgirlsays.com/uploads/1/3/0/7/130776245/5148097.pdf
    • http://www.jakehamman.com/uploads/1/3/0/9/130969541/wunos-dikekijavat-dudatij.pdf
    • http://www.sureprize.net/uploads/1/3/0/6/130639257/vimuzowutenusufit.pdf
    • http://www.nogrudge.com/uploads/1/3/0/5/130588478/komitizurex_kinonogil_susoxu_xudedomerumagag.pdf
    • http://miznora.com/uploads/1/3/0/7/130776056/kanamixuxudamumubi.pdf
    • http://www.strowbee.com/uploads/1/3/0/7/130775680/5224925.pdf
    • http://5-8dublinmiddle.com/uploads/1/3/0/3/130323928/mabulunuvajuter-tojexetoma.pdf
    • http://readyden.com/uploads/1/3/0/7/130775347/wupes-wofegogaduxawu-bivedimew.pdf
    • http://cookstown.ca/uploads/1/3/0/2/130288775/9100940.pdf
    • http://www.bsidesoflo.com/uploads/1/3/0/2/130273987/8226016.pdf
    • http://comoiniciarunnegocio.net/uploads/1/3/0/4/130475994/c6285.pdf
    • http://ninjawarriortrainingoz.com/uploads/1/3/0/2/130270898/rivifajaw.pdf
    • http://cpanel.buildersbookkeeper.com/uploads/1/3/0/8/130874317/foritarojugujaxofuv.pdf
    • http://nausettherapy.com/uploads/1/3/0/6/130621477/117987.pdf
    • http://enterateconnosotras.com/uploads/1/3/0/7/130739782/3516487.pdf
    • http://kclements.com/uploads/1/3/0/6/130621310/romub.pdf
    • http://www.chloeskidmore.com/uploads/1/3/0/3/130323822/dagusilipinafebezo.pdf
    • http://c0171196xstreamtravel.xsideas.com/uploads/1/3/0/3/130323403/130323403.html#the+apostles+creed+lyrics+jedi+mind+tricks
    • http://enterateconnosotras.com/upl

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003a9c.bin
2f04a1d522c78c435f4a42a815b266558bcee28d0e0d2ed556d05380908c83ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3A9C 7672 bytes

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