Malicious PDF — malware analysis report

Static analysis result for SHA-256 a63e46fd5c3e824e…

MALICIOUS

PDF

42.5 KB Authoring application: LibreOffice
MD5: 1431d76f8c1bb31ac073b6d29b66082a SHA-1: fa66b274a36dd454053766cd6d4f3a97a4ccc897 SHA-256: a63e46fd5c3e824ec3ff59fb516d138f441c7fbf48731ba8eb014246b97e56c5
150 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains a large number of embedded URLs, forming a link farm that directs users to other PDF files. This technique is commonly used for phishing or distributing further malware. The document body, though partially corrupted, contains text related to 'hair cutting images' and mentions LibreOffice, likely serving as a lure to disguise the malicious nature of the embedded links.

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://wayneandbecca.com/uploads/1/3/0/7/130738569/xesegabunalezir-fadetomi-jepevivevub-nepotod.pdf
    • http://pvbcommunications.com/uploads/1/3/0/2/130289186/zuvikas.pdf
    • http://bellanetfiber.net/uploads/1/3/0/4/130435753/rawoliru_zibokamalujax.pdf
    • http://wisconsinweddingmusic.com/uploads/1/3/0/6/130603682/7276772.pdf
    • http://nicolestampsllc.com/uploads/1/3/0/2/130287953/1220738.pdf
    • http://cassiecares.org/uploads/1/3/0/5/130550940/0fd25fcd43a9239.pdf
    • http://myscigroup.com/uploads/1/3/0/5/130539251/3216730.pdf
    • http://balancedforlifeyogatherapy.com/uploads/1/3/0/5/130551094/3e92b2b09be3473.pdf
    • http://worldwidegreatescapes.com.au/uploads/1/3/0/6/130604169/fekipefapik.pdf
    • http://cecilyeiferle.com/uploads/1/3/0/7/130775587/130775587.html#hair+cutting+images

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000123f.bin
3031c7b8a8e0a1b9979307b554f427a2048aa584b3cf42e5ef0f8b0b376217f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x123F 8008 bytes

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