Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a8463493a848c98…

MALICIOUS

PDF

38.2 KB Authoring application: Nitro PDF
MD5: e08864597dfaedf428a06f1d883ca43d SHA-1: 7563d12c9f9e6feb9df22eebeff18c462b72118b SHA-256: 8a8463493a848c98356180237f3be8fe5d1dc74f9903cd53101f088fa10687a4
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing lure. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or traffic redirection intent. The document body, though partially corrupted, contains text related to sedimentary rocks and quizlet, likely a pretext to disguise the malicious links.

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 https://vutevaxanu.weebly.com/uploads/1/3/0/4/130490875/2057946.pdf
    • http://eldaag2019.com/uploads/1/3/0/2/130289229/7436929.pdf
    • http://pressurecleanperth.com/uploads/1/3/0/4/130436402/kudamowafafow_setesobabivozas_maxopegemexev.pdf
    • http://connelyhitnews.com/uploads/1/3/0/6/130621479/nilarosomaroxeterub.pdf
    • http://worldgolflessons.com/uploads/1/3/0/6/130604706/b22998c21.pdf
    • http://nicolaseconomou.net/uploads/1/3/0/3/130379126/fugovaj.pdf
    • http://beasttviptv.com/uploads/1/3/0/5/130539336/fojamuvepup_fevoxupel_rogedokumibepi.pdf
    • http://adentakorea.com/uploads/1/3/0/6/130640069/dc6ad.pdf
    • http://superbrot.icu/uploads/2020/01/28/zamodowufabika.pdf
    • http://colinaway.com/uploads/1/3/0/5/130588461/130588461.html#which+of+the+following+is+an+example+of+a+detrital+sedimentary+rock+quizlet

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001272.bin
685f28939fbbbcbf02910adca382c57f624f9213a98b3f4d313909bf131a6a84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1272 8192 bytes

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