Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2ca6a31d886f384…

MALICIOUS

PDF

34.0 KB Authoring application: pstoedit
MD5: 1e6580dc92eba5cc1079b46713107ce0 SHA-1: c65b647bb88aeae1e68bf2d6ffd4c5dee8dfc900 SHA-256: f2ca6a31d886f384dfd5a6aad0a9fce90f5dabfbe5d0da2c2df8c10cb65f89e8
128 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm, designed to direct users to malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malicious download intent. The presence of a 'download button' heuristic reinforces the lure mechanism. No scripts were extracted from this sample.

Heuristics 4

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://daforuwemo.rostov-posutochno.ru/uploads/2020/01/29/penes.pdf
    • http://mmflackdesigns.com/uploads/1/3/0/6/130604072/fuwozaju.pdf
    • http://unftelecom.org/uploads/1/3/0/2/130272260/zumukudonozemilet.pdf
    • http://lachozaspa.com/uploads/1/3/0/6/130639397/xokit-barutumivora.pdf
    • https://fovulogok.weebly.com/uploads/1/3/0/5/130588336/9207249.pdf
    • http://sabrepartners.com/uploads/1/3/0/6/130621744/kafesora.pdf
    • http://mycorporateteambuilding.com/uploads/1/3/0/4/130476390/gigunesifulevivef.pdf
    • http://gojaxale.visit-kazan.ru/uploads/2020/01/29/tivoko-zufipovero-vuxaxa.pdf
    • http://clucktruckportland.com/uploads/1/3/0/4/130436049/130436049.html#rehab+protocol+achilles+tendon+repair

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011b5.bin
f6cc089290fff043ed1152d608a6a76b21d9a1bf88525031d87172be92faba3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11B5 7684 bytes

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