Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e87c5c3d813d7ec…

MALICIOUS

PDF

66.9 KB Authoring application: Karbon
MD5: 439676180fb033171495eadc463b050b SHA-1: 3d99c5c67febe52f1ee38853ea5d47254fcef88e SHA-256: 6e87c5c3d813d7ec23c43a1706dd37f5230cf0e42d51f94dfca8a136e933a647
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, a technique often used for SEO manipulation or to distribute further malicious content. ClamAV identified this as Pdf.Phishing.TtraffRobotInstall, suggesting a phishing or traffic-generating purpose. No scripts were extracted, but the heuristic firings strongly indicate a malicious intent to redirect users to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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://www.artucandostudio.com/uploads/1/3/0/5/130550836/disesusib-tatiwoxesovije.pdf
    • http://3counties-hot-tub-hire.co.uk/uploads/1/3/0/5/130538840/vibamakob.pdf
    • http://equestriansupply.co.nz/uploads/1/3/0/3/130379123/piwiwez-derapifato-josoditoz-juxoxebun.pdf
    • http://backstage.net.au/uploads/1/3/0/2/130289457/7782897.pdf
    • http://thedevotedcollection.com/uploads/1/3/0/5/130588225/dikibozofo.pdf
    • http://rhondaatrottministries.com/uploads/1/3/0/4/130476885/e500efdf0.pdf
    • http://baronyofthelonelytower.org/uploads/1/3/0/5/130590531/2011705.pdf
    • http://rcloud.net/uploads/1/3/0/5/130588698/xafusemizejawal-wimegadozaj-pelulanuzotepo-mofutosoke.pdf
    • http://mirroryourbrilliance.com/uploads/1/3/0/5/130590203/f5359e1cd6e39f3.pdf
    • http://appleciderdoughnuts.com/uploads/1/3/0/6/130639879/fenuwa.pdf
    • http://cassford.info/uploads/1/3/0/2/130289479/fotijexaxemuwolize.pdf
    • http://northwestbookkeepingllc.com/uploads/1/3/0/2/130270748/2061ba20982.pdf
    • http://weddingplanner.blog/uploads/1/3/0/5/130551142/c4ec2a04c43115a.pdf
    • http://www.rainbowbost.com/uploads/1/3/0/8/130814926/a0707.pdf
    • http://amudyomi.net/uploads/1/3/0/7/130739712/1602577.pdf
    • http://myexplorelive.com/uploads/1/3/0/6/130639854/7088450.pdf
    • http://ourlittleflowers.com/uploads/1/3/0/6/130639634/b2d4852d09d4dbc.pdf
    • http://doubleeagleadvisers.com/uploads/1/3/0/5/130539054/lavab.pdf
    • http://floppycat.net/uploads/1/3/0/2/130274355/lopidomov_roxesosoje.pdf
    • http://younglivingdaily.com/uploads/1/3/0/7/130740158/titupimedela.pdf
    • http://newbethelrolesville.com/uploads/1/3/0/6/130605497/vures-fusodaporaxumu-gesonivek-pudove.pdf
    • http://jonnyzero.net/uploads/1/3/0/4/130488217/ac1d7d141.pdf
    • http://21988.atkhn.com/uploads/1/3/0/6/130639133/wowetedupexiwig.pdf
    • http://formal-ink.studio/uploads/1/3/0/7/130740175/d63434d.pdf
    • http://blacktreelofts.com/uploads/1/3/0/6/130620653/130620653.html#download+s%C3%A1ch+effortless+english+full+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000073a0.bin
27aad4e7100ae85831cc1a9cf4859e84521ff6b1ee9ac199fa10e6c4d4b25dad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73A0 2736 bytes
font_01_sfnt_off00007e75.bin
0460c2e47668db7cf3ac237babd375baeee5a72003670308554bbd42549c5ce8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E75 24268 bytes
font_02_sfnt_off0000a03d.bin
b7657856eaf5a515f0df22cb7540b70b7e5619eade56dce80dc99fb64843aa22		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA03D 11208 bytes

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