Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b35b629ae00fd60…

MALICIOUS

PDF

37.8 KB Authoring application: GIMP
MD5: bf52ef2428d6a84f2e07da8884ea246b SHA-1: eeb8be75a988cd2cce6e346a352647b894317b6c SHA-256: 6b35b629ae00fd605d632e9e73c71dc64a75422eecd97dadf1f52f89f29ec900
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO spam or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to potentially harmful content.

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://sexualgames.org/uploads/1/3/0/4/130483376/401238.pdf
    • http://bloodchip.com/uploads/1/3/0/3/130379377/zizavoriviri.pdf
    • http://myfavoritegoodies.com/uploads/1/3/0/6/130621800/876443.pdf
    • http://onionality.com/uploads/1/3/0/6/130639170/zovefu.pdf
    • http://notyourmothersboutique.com/uploads/1/3/0/6/130621819/6457472.pdf
    • http://shearwaterwarmbloods.ca/uploads/1/3/0/3/130323727/5436750.pdf
    • http://marriedbylauren.com/uploads/1/3/0/4/130476161/f3389dbc1.pdf
    • http://mobilebeatzofcolorado.com/uploads/1/3/0/8/130874258/rozojove.pdf
    • http://un-nyc.com/uploads/1/3/0/6/130621349/fujimakuxeruduxopa.pdf
    • http://wellnessmonkey.com/uploads/1/3/0/6/130605506/7965908.pdf
    • http://fhs-pto.com/uploads/1/3/0/2/130291702/116888dfd628552.pdf
    • http://oakgrovefarmstn.com/uploads/1/3/0/6/130604531/dapoganonefi.pdf
    • http://www.jccandlesonline.com/uploads/1/3/0/7/130739827/jivajaruj-mimuxe-vetanadud-dafapogategaguj.pdf
    • http://noscopegaming.net/uploads/1/3/0/7/130775448/fuvosev-lufojuzenitebo-kituvogodudu-komubewebifa.pdf
    • http://lakegeorgebrewhouse.com/uploads/1/3/0/4/130476401/fde51b2c111.pdf
    • http://herhydroseeding.com/uploads/1/3/1/0/131070646/watewupiv.pdf
    • http://fretbuzz.com/uploads/1/3/0/6/130604127/2968572.pdf
    • http://hickorygroveciviccenter.org/uploads/1/3/0/5/130551898/rijizazize-suziwisufajariw.pdf
    • http://filmroar.com/uploads/1/3/0/7/130740249/36b8823445475.pdf
    • http://marketinginalbania.net/uploads/1/3/0/4/130435746/2ff62b5.pdf
    • http://vps9-internal.pleasingfood.com/uploads/1/3/0/7/130739951/130739951.html#a+christmas+carol+stave+3+summary+quotes

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000035d6.bin
ea15a302d2ac63e542a6e38984d3afe04a7ab27f7f6179df8ee93a3c95eb3ca7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x35D6 7420 bytes

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