Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ee360f2886e84da…

MALICIOUS

PDF

48.8 KB Authoring application: Mobipocket Creator
MD5: e2fba8e3057e74940375b16de1bf74d2 SHA-1: e74bc4e40aa1b1a1a2e47e45ed3b430e4c08d795 SHA-256: 9ee360f2886e84da62595a6c49ac9e85699bd66069038a0b1c108afc7e89eb98
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to other PDF documents hosted on various domains. This behavior is indicative of a link farm or a phishing campaign designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly support the malicious verdict. No scripts were extracted from this sample.

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://adaradecor.com/uploads/1/3/0/3/130379150/kepar-dakaxu-rijido.pdf
    • http://affinityhorseracing.com/uploads/1/3/0/5/130589220/1061780.pdf
    • http://coolmanraulh.com/uploads/1/3/0/5/130541662/932be0148ebfb.pdf
    • https://kejemugoxojis.weebly.com/uploads/1/3/0/5/130551727/sevupolezaleli.pdf
    • http://esemkb.com/uploads/1/3/0/5/130550982/f2566.pdf
    • http://thebibleistheanswer.org/uploads/1/3/0/3/130379482/e7bf23e3d06d8.pdf
    • http://droscarparada.com/uploads/1/3/0/5/130588282/ee8be860608f.pdf
    • http://mhi-hoa.com/uploads/1/3/0/4/130483288/2027662.pdf
    • http://preranaboutique.com/uploads/1/3/0/4/130483739/jimulurur.pdf
    • http://ankezimmermann.ca/uploads/1/3/0/5/130550714/130550714.html#abbasid+empire+accomplishments

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011db.bin
cb085fbb9f1d851a7b260eaecf8f876f1ad360f6cd485f0c6d7584aa81b93ef1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11DB 8108 bytes
font_01_sfnt_off000078fe.bin
7452b6b49b2d67df973eecb7580c7a2fe344bf55d7b957b3ade50b6969c50269		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78FE 16068 bytes

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