Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1bb521dfacdbcf1…

MALICIOUS

PDF

45.2 KB Authoring application: LibreOffice Draw
MD5: 928464e82e367240e342fa65c1294b1a SHA-1: 5205eab8d287b60e6f163190f931fc6cbc23b790 SHA-256: d1bb521dfacdbcf1f09fd94fedb5c1d0e9c674b53bbd39bd06724250a35e6c8b
120 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 files hosted on various domains. This behavior is indicative of a link farm or a phishing campaign designed to distribute malicious content or manipulate search engine results. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the malicious nature of this file.

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://mosfitness.net/uploads/1/3/0/2/130289546/2158669.pdf
    • http://doodlebugblessingsgoldendoodles.com/uploads/1/3/0/5/130544811/laxoputa.pdf
    • http://dogtalephoto.com/uploads/1/3/0/5/130551880/jepavigulotuxu.pdf
    • http://nh-dreamhomes.com/uploads/1/3/0/5/130551001/d15d159136b881.pdf
    • http://antizavtra.ru/uploads/2020/01/28/vosixepotoketabu.pdf
    • http://bootcampandfitnessworkouts.com/uploads/1/3/0/3/130313504/wopawetovikozi-vosum-pejadojiragat-kimerukagata.pdf
    • http://patlyonscreations.com/uploads/1/3/0/4/130488470/5271122.pdf
    • http://shawnsevario.com/uploads/1/3/0/5/130542965/xitetiriz-jonibekewaja-bawisofukeze-fakujawezixa.pdf
    • http://wppsa.com/uploads/1/3/0/7/130738646/wojirul.pdf
    • http://bernardobellostudio.com/uploads/1/3/0/4/130489159/130489159.html#adobe+lightroom++apkpure

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000128c.bin
40073cb4f21e6cabcd00806b4fc0f7681f605531ef8589d10b4f84827866654b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x128C 8468 bytes

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