Malicious PDF — malware analysis report

Static analysis result for SHA-256 fecaa7e0e5ccfe3b…

MALICIOUS

PDF

43.5 KB Authoring application: Nitro PDF
MD5: 1cebb387cd9519ed3f92960ede8f20b3 SHA-1: d4ba3b9bf9b6e92fadcb543d7c2cef4eff7fa398 SHA-256: fecaa7e0e5ccfe3bb7c6017a9161c705879dd086fc46dbf940b63e4ddbf144d2
150 Risk Score

Malware Insights

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

The PDF document was flagged by multiple heuristics, including a critical finding for a large external link farm. The embedded URLs suggest a phishing or redirection campaign. The document body, though containing garbled text, mentions 'Nitro PDF Convert txt files to pdf', which may be a lure to disguise the malicious intent. The primary attack pattern involves leveraging a link farm to distribute malicious 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://masterpakes.com/uploads/1/3/0/9/130969366/ravopojawujexezoweta.pdf
    • http://blackbeardmarketing.com/uploads/1/3/0/8/130874519/af6bed662fb4.pdf
    • http://morrowproperties.net/uploads/1/3/0/3/130324065/pivitifovu.pdf
    • http://britkits.com/uploads/1/3/0/5/130538817/6420961.pdf
    • http://blockchainicogroup.com/uploads/1/3/0/7/130776070/vazanalu.pdf
    • http://rhsimb.org/uploads/1/3/0/6/130603710/nixerawujawa.pdf
    • http://soynwicks.com/uploads/1/3/0/8/130815031/4031750.pdf
    • http://tittsmcgee.com/uploads/1/3/0/5/130590205/8947e4fa41.pdf
    • http://maltaglasscreations.com/uploads/1/3/0/3/130323151/6285852.pdf
    • http://lifechurchglasgow.com/uploads/1/3/0/2/130287314/e826f6b.pdf
    • http://clarksurveyor.com/uploads/1/3/0/7/130776590/tefawoloripe.pdf
    • http://mooseandmagpiefarm.com/uploads/1/3/0/2/130289371/pajonilevejobigoguwu.pdf
    • http://afterglow-care.com/uploads/1/3/0/2/130288316/mevijenegejibafefid.pdf
    • http://natronacountyclassifiedprofessionalsassociation.org/uploads/1/3/0/4/130488345/9227779.pdf
    • http://movingbeyondyoga.com/uploads/1/3/0/2/130272606/dewuru.pdf
    • http://www.fluidadventures.shop/uploads/1/3/0/6/130621167/kudukaruxeg.pdf
    • http://www.tdwcommunications.com/uploads/1/3/0/5/130589305/pajaxilogi.pdf
    • http://mail.adamthibert.com/uploads/1/3/0/4/130436089/e5b5bed.pdf
    • http://www.mariaaki.com/uploads/1/3/0/4/130476158/jenexediteme_tikiriwepigazu.pdf
    • http://zephyrhome.com/uploads/1/3/0/5/130550949/130550949.html#convert+txt+files+to+pdf
    • http://www.fluidadventures.shop/up

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033de.bin
a68ad206e6fa00de9a93bcd426264e2a948f22db9431d90be7110a1ae082cbf6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33DE 16076 bytes
font_01_sfnt_off00004b47.bin
70d774121b8cfbaebde9375c7e1b434166f1fef2803d73e10afb5191fa44d4d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B47 8016 bytes

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