Malicious PDF — malware analysis report

Static analysis result for SHA-256 a76b1a7bf73a8907…

MALICIOUS

PDF

42.2 KB Authoring application: PDF Studio
MD5: cb738822ff51a2034190c59c2c4e1c4a SHA-1: baca4904382b61923b1964f0c32b29acd63c2361 SHA-256: a76b1a7bf73a8907b8ddf9676fdfc4ac87cec31a6f07b89017ecd8b41d7d534f
150 Risk Score

Malware Insights

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

The PDF file contains a mass of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious content. ClamAV identified this as Pdf.Phishing.TtraffRobotInstall-7605656-0, and an ML classifier also flagged it as malicious. The document body text is heavily corrupted and unreadable, providing no further context on the specific lure.

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://vertudevelopment.com/uploads/1/3/0/5/130541384/4bce60d.pdf
    • http://melissaneckphotography.com/uploads/1/3/0/3/130324191/c56fafbc4d.pdf
    • http://playforcure.com/uploads/1/3/0/9/130969452/1376436.pdf
    • http://www.jjshelpingheart.org/uploads/1/3/0/5/130546209/bipesovowumufadeluwa.pdf
    • http://dreambiztestdrive.com/uploads/1/3/0/7/130775252/4667215.pdf
    • http://asianmag.net/uploads/1/3/0/5/130551006/lasosu_lawufoxinadudu.pdf
    • http://orderyourbluebook.com/uploads/1/3/0/5/130588595/d8f6d.pdf
    • http://kupetspinkinvitational.com/uploads/1/3/0/2/130287296/fibopobezu-reruzaviv-kekakoguzujisal-zogixiduzezaxuv.pdf
    • http://mta-sts.mail.eickmannconsulting.com/uploads/1/3/0/6/130621115/30ebe.pdf
    • http://azbikenhike.com/uploads/1/3/0/5/130589187/vilaro.pdf
    • http://oconnorandassociates.com/uploads/1/3/0/6/130604759/7777988.pdf
    • http://mfengshui.com/uploads/1/3/0/6/130604687/finozujukobire_lobejapareget_dumorasanizuwu_koxuxasom.pdf
    • http://www.lindseyhemmings.co.uk/uploads/1/3/0/8/130874126/tuvageveke-roralisuvizek-doxutatulinuw.pdf
    • http://meddin.space/uploads/1/3/0/3/130323186/6193556.pdf
    • http://mail.firstchurchunionville.org/uploads/1/3/0/8/130874143/gosoxibik.pdf
    • http://nowallsministry.net/uploads/1/3/0/5/130550667/refosenudena_sakesir.pdf
    • http://www.beeziecorner.com/uploads/1/3/0/8/130814070/3681717.pdf
    • http://www.brunellojoe.com/uploads/1/3/0/5/130588568/da80fcd.pdf
    • http://ruksfascilitiesmanagementltd.com/uploads/1/3/0/6/130604834/9330091.pdf
    • http://shenprayer.club/uploads/1/3/0/7/130739806/8878777.pdf
    • http://apearena.com/uploads/1/3/0/4/130483653/dumisubazujonaf_jevakumoxazi.pdf
    • http://paschal77.com/uploads/1/3/0/7/130739991/pekoxipowabum.pdf
    • http://iqcreditunion.net/uploads/1/3/0/6/130604958/c19c1e232.pdf
    • http://myprizeonline.com/uploads/1/3/0/5/130539338/tabuwobusobeki.pdf
    • http://cgccc.com/uploads/1/3/0/3/130313263/vusemilelawokis.pdf
    • http://4wys0r.bdgct.com/uploads/1/3/0/5/130588822/130588822.html#autonomic+nervous+system+gut+motility

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000040cc.bin
bf87ba01ab368be24bb0bc7f8587a94df88bf2fb920c9b3ca0c4eba5db2c2191		 pdf-font-stream PDF embedded font (sfnt) at offset 0x40CC 7864 bytes

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