Malicious PDF — malware analysis report

Static analysis result for SHA-256 94dbf0896c6e822c…

MALICIOUS

PDF

42.2 KB Authoring application: Adobe PDF Library 9.0
MD5: 2867968a1ef9d3e1c9f162799879b74f SHA-1: a3fefc2f71aa83f81cd42353383bf4fcb1d88372 SHA-256: 94dbf0896c6e822c2cc77e4b23779e033e2cd76473064a1e10fa7745cf984407
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to other PDF files hosted on various domains, a technique often used for SEO spam or to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, consistent with a phishing or redirection campaign. No scripts were extracted, and the document body primarily contains metadata and obfuscated text, reinforcing the focus on the embedded links as the primary attack vector.

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://rosiesnaturalway.com/uploads/1/3/0/2/130289636/gibim-zexawaku.pdf
    • http://thecannacontainer.com/uploads/1/3/0/2/130274279/159307.pdf
    • http://myisom.net/uploads/1/3/0/3/130323163/demewi.pdf
    • http://emandlicustomdesigns.com/uploads/1/3/0/6/130604173/gunedajosu.pdf
    • http://parislomas.net/uploads/1/3/0/6/130639052/618533b021e1a11.pdf
    • http://modyjiller.com/uploads/1/3/0/5/130588591/madunisuzow_keruzidaler.pdf
    • http://chatthillscommunity.com/uploads/1/3/0/7/130776246/rapovejenoresur_zujisevowovava.pdf
    • http://mewantemooseicdayglasgow.com/uploads/1/3/0/4/130435929/ae52cc1b159cbc9.pdf
    • http://diamondviewfarms.com/uploads/1/3/0/5/130540077/8279061.pdf
    • http://lightspeedeverywhere.com/uploads/1/3/0/6/130620906/dc2283bc2a75.pdf
    • http://shardexplorers.com/uploads/1/3/0/6/130621077/130621077.html#inhibition+of+alpha-glucosidase+and+alpha-amylase+by+flavonoids

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000135e.bin
3e9ddc0dd5853d5599fc065b43bc826bb1a0a7bf694b287fe0db23bd2f359cbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x135E 9568 bytes
font_01_sfnt_off0000691e.bin
4d9ec2aec8f1ca6bebe1b56492fd55a77bba3a6e98efb76508c1b835d4eb9912		 pdf-font-stream PDF embedded font (sfnt) at offset 0x691E 2860 bytes

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