Malicious PDF — malware analysis report

Static analysis result for SHA-256 954d430f5b5d5327…

MALICIOUS

PDF

40.8 KB Authoring application: ImageMagick
MD5: e739bcf61e746f4c43f0e2d07bd2aea5 SHA-1: e85bcbd8f4b5d495dff6c1f7bbbb872ac7eee589 SHA-256: 954d430f5b5d53275ff374b0b574669755412783ee62f8c238a743a061d42aa8
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body itself is largely unreadable but contains some of the same URLs, reinforcing the link farm attack pattern.

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://thedevyngunshow.com/uploads/1/3/0/2/130289577/4416814.pdf
    • http://bagalimo.girlsonvideo.store/uploads/2020/01/28/laxujabu.pdf
    • http://buwa.srpautomotrestucuman.com/uploads/2020/01/28/bofogisavugefur.pdf
    • http://kinifimi.malka-cc.com/uploads/2020/01/28/watiwapujafov.pdf
    • http://baltimorespa.net/uploads/1/3/0/3/130313398/6d2b615fe.pdf
    • http://kylestevenanderson.com/uploads/1/3/0/3/130324136/6c74151.pdf
    • http://dobobi.starcrane.ru/uploads/2020/01/28/venipam-nediranewox.pdf
    • https://bimixixuno.weebly.com/uploads/1/3/0/5/130551226/vagewogawe.pdf
    • http://sadaxix.stoneprocessingtool.ru/uploads/2020/01/27/2227708.pdf
    • http://fel.bitskinc.pro/uploads/2020/01/28/5587615.pdf
    • https://garumaxemev.weebly.com/uploads/1/3/0/4/130476598/68306.pdf
    • http://momsinrecovery.com/uploads/1/3/0/6/130620435/ec35a.pdf
    • http://frebuilds.com/uploads/1/3/0/5/130590229/6665121.pdf
    • http://kcbevco.com/uploads/1/3/0/6/130621912/130621912.html#pantalla+principal+de+word+2010

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000149d.bin
5cad2dc5c6e443067517a89898aa489a1410fb1bd478baac94a8d33efe2b343f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x149D 8488 bytes
font_01_sfnt_off000057cc.bin
5d7ebd720715cd86529581f1d40cc643f68465477bd430d4be5ff736bc95f798		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57CC 16268 bytes

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