Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3732c9562a63571…

MALICIOUS

PDF

34.3 KB Authoring application: pstoedit
MD5: 5f043f6f7e9cd69feca6adee006c27de SHA-1: 8236b8b0f9f772ef6c3160886b9956a216948346 SHA-256: f3732c9562a635713903b035ffa6feca05078b784d37683e57ee8f9c057b0000
122 Risk Score

Malware Insights

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

The PDF document contains a lure to 'UPGRADE YOUR BROWSER', suggesting a technical support or fake update scam. It also contains a large number of embedded URLs pointing to other PDF files, indicating a link farm designed to distribute malicious content or engage in SEO abuse for phishing. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the phishing and traffic redirection nature of this file.

Heuristics 4

  • 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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://wikademia.org/uploads/1/3/0/6/130603937/desuxavunakafo.pdf
    • http://eraji.net/uploads/1/3/0/2/130272963/9756583.pdf
    • http://bsr-project.com/uploads/1/3/0/6/130621906/c62c3a9.pdf
    • http://entollamixxedtraffic.com/uploads/1/3/0/7/130775498/bugufabirez_wononawas.pdf
    • http://zonemaster.neilfortune.com/uploads/1/3/0/3/130313191/713d0e.pdf
    • http://yourpowertothrive.net/uploads/1/3/0/2/130274330/7892d.pdf
    • http://elainetravel.club/uploads/1/3/0/4/130478551/powefo-jofosusudigano-nirebomifupawo.pdf
    • http://bbvillahallau.com/uploads/1/3/0/6/130640218/fe5da3.pdf
    • http://bigdataclass.com/uploads/1/3/0/4/130494871/6080927.pdf
    • http://www.theproteincheesecakeco.com/uploads/1/3/0/4/130476075/165466.pdf
    • http://argentinahop.com/uploads/1/3/0/8/130874593/4366768.pdf
    • http://myslotweb.com/uploads/1/3/0/2/130272909/2418920.pdf
    • http://kaahafarah.com/uploads/1/3/0/6/130620834/kisamem.pdf
    • http://cmqi.com/uploads/1/3/0/7/130738752/xurunol_nogoribuwubito.pdf
    • http://jeremyslade.net/uploads/1/3/0/8/130874194/vusutok.pdf
    • http://iohannespontes.com/uploads/1/3/0/2/130272353/vofirejaleku-losajipiwe-jazaweranufukal-kobaladexeda.pdf
    • http://candysitter.com/uploads/1/3/0/6/130621345/xafuwipanitiz_kemukoli_bamawoburegar_sulonilaweluvo.pdf
    • http://powerofgodinchrist.com/uploads/1/3/0/4/130483469/podevapave.pdf
    • http://blogfixation.com/uploads/1/3/0/7/130775294/b8517635a5.pdf
    • http://michsblingboutique.com/uploads/1/3/0/7/130739619/41ab3eadbb2131a.pdf
    • http://www.thegivingvinethriftstore.com/uploads/1/3/0/6/130604576/7317650.pdf
    • http://www.nqhomeloans.com.au/uploads/1/3/0/5/130551245/sipojefupomejap.pdf
    • http://alteredsky.net/uploads/1/3/0/5/130590511/3988127.pdf
    • http://mfgm-produkte.de/uploads/1/3/0/6/130621895/fcc011406f7f.pdf
    • http://callisterconsulting.com/uploads/1/3/0/8/130813592/130813592.html#pipelined+multiplier+verilog+code

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000025b5.bin
88229077391dd3372a2f64fc4f89ca9d00f272f253d1842855f3ef7d9c60f150		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25B5 7532 bytes

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