Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a2caf77d63702c9…

MALICIOUS

PDF

66.2 KB Authoring application: Solid Converter PDF
MD5: 0f4518d524dc52f271faacdf6680dd30 SHA-1: f71f89ade1b76df341120a56b13e8ed7bca74c9a SHA-256: 0a2caf77d63702c9f7df760765b3a4ed66fd64ae36908acfd43f79f71a1eb366
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm with 18 external PDF links, many of which are hosted on suspicious domains and follow a pattern of numeric slugs. This heuristic, combined with ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 and a high ML classifier score, indicates a phishing or malicious content distribution attempt. The embedded URLs likely lead to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://aimeekena.com/uploads/1/3/0/4/130435990/zobizugesib_kexozuge_womidabix.pdf
    • http://habana-moscu.com/uploads/2020/01/29/c38e817f.pdf
    • http://changeurself.win/uploads/2020/01/28/nuwajidizosil.pdf
    • http://lizziehewittdance.com/uploads/1/3/0/4/130476786/vutopekuzifezo_fumidewofage_miwagaveji.pdf
    • https://xovezafig.weebly.com/uploads/1/3/0/6/130605065/vakezopova.pdf
    • https://daviwamasazoluz.weebly.com/uploads/1/3/0/5/130538981/ziraguzi.pdf
    • http://fud.depicorn.ru/uploads/2020/01/28/9113112.pdf
    • http://renupe.edutecagua.tech/uploads/2020/01/28/zedosulukotot.pdf
    • http://australiancouncilofhinduclergy.org/uploads/1/3/0/6/130639646/4660618.pdf
    • http://nationalfootballcheerleadersalumni.org/uploads/1/3/0/6/130639409/130639409.html#access+sample+database+free+download

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000148f.bin
b9b44755f3d8efcb2fa264e5302dc2f99a5604e05002f9edc2458d01ed3924fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x148F 8596 bytes

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