Malicious PDF — malware analysis report

Static analysis result for SHA-256 221fc055fd72a4cc…

MALICIOUS

PDF

43.8 KB Authoring application: Mobipocket Creator
MD5: b6e2f3ae5ae870a1087a3e002fbbf93a SHA-1: 87d0bb8da34ee986d7eed4ed34de21eebce89720 SHA-256: 221fc055fd72a4cc14038f32db3acddf993bbf1492dc535322908a64bdf9498c
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ClamAV and a machine learning classifier, indicating malicious intent. The PDF_SEO_LINK_FARM heuristic identified a large number of embedded external links, suggesting a link farm used for SEO poisoning or to redirect users to malicious sites. The ML_NYX_PDF_MALICIOUS and CLAMAV_DETECTION heuristics confirm the malicious nature of the document. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://studioc229.com/uploads/1/3/0/5/130551457/ravogoxuvekox-momogid-jawapawopusar.pdf
    • http://bluefinmiddletonma.com/uploads/1/3/0/6/130639300/nubude_javubawu_subamine.pdf
    • http://newinsightfss.org/uploads/1/3/0/3/130313619/9455938.pdf
    • http://mirandasanderson.com.au/uploads/1/3/0/3/130379367/23c8d4063b28.pdf
    • http://caylahwestphotography.com/uploads/1/3/0/5/130589019/d189c1d9.pdf
    • http://12ministries.org/uploads/1/3/0/6/130620909/nitoletigubi-xomuma-sofoniposo-vorepiwewo.pdf
    • http://ven.kuhnimsc08.icu/uploads/2020/01/29/3273316.pdf
    • http://specialdilliveries.com/uploads/1/3/0/2/130288642/mubobegif.pdf
    • http://methylationassociation.com/uploads/1/3/0/4/130436213/1324684.pdf
    • http://6000hudson.com/uploads/1/3/0/4/130436439/4ea6f1c5a2ba.pdf
    • http://mosimannlab.com/uploads/1/3/0/6/130604494/pelalibemevo_banid_mafasomisamedum_duxavemok.pdf
    • http://natalieelizabethseipert.com/uploads/1/3/0/6/130604195/1d29986e5a5db70.pdf
    • http://wadsworthupward.com/uploads/1/3/0/7/130740502/130740502.html#vivitar+auto+thyristor+283+manual

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013e7.bin
0f924eca0b2f629b986f852db8c97655f5dc4e94721291e9c99adc2bb19d2d24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13E7 9380 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.