Malicious PDF — malware analysis report

Static analysis result for SHA-256 c793703220a43c25…

MALICIOUS

PDF

39.9 KB Authoring application: Adobe PDF Library 9.0
MD5: 52faa56c58091b703dccfe18a822eab8 SHA-1: 2be32b6e35895df8558fed98e63cdf5d6f4cfe43 SHA-256: c793703220a43c25c07f42d4d18badeabe9e3f9c2b11541d90c30b4b358aace3
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to external PDF documents, a technique often used for SEO spam or phishing. The ClamAV heuristic also flags this as 'Pdf.Phishing.TtraffRobotInstall-7605656-0', reinforcing the phishing and traffic redirection intent. The document body, though partially corrupted, also contains some of these URLs.

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://movingmountains.services/uploads/1/3/0/2/130270901/wupugojokurewojatada.pdf
    • http://terriemckee.com/uploads/1/3/0/5/130543545/180447.pdf
    • http://kevindalymusic.com/uploads/1/3/0/4/130476054/ca707ec845248.pdf
    • http://zoeapos.com/uploads/1/3/0/3/130379123/a785873374803.pdf
    • http://taxovufav.nithyamarriages.com/uploads/2020/01/27/guzowol-lilubetetewasuw.pdf
    • http://woletorapo.zaruba.pro/uploads/2020/01/28/7726671.pdf
    • http://90894735.nhd.weebly.com/uploads/1/3/0/6/130604373/kulaf.pdf
    • http://dobupi.houseter.ru/uploads/2020/01/27/lumatetuzidowakexafu.pdf
    • http://duwudin.flashapp.online/uploads/2020/01/28/05ffb520.pdf
    • http://ridufo.ladies.wine/uploads/2020/01/27/fetemepen.pdf
    • http://splitfingerstudio.com/uploads/1/3/0/6/130604563/55e8f9d795fe848.pdf
    • http://nuobeijing.devsite-1.com/uploads/1/3/0/3/130313494/130313494.html#bumblebee+transformers+cake

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012ed.bin
08ab55c72ad4275eced2da004cdb2af462d451df567796f8d2bb5b8651af6ae5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12ED 8572 bytes

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