Malicious PDF — malware analysis report

Static analysis result for SHA-256 932d47cc022da56f…

MALICIOUS

PDF

58.6 KB Authoring application: LibreOffice
MD5: bde2cb4f67f5b3bee7434b06ef5e38e8 SHA-1: 5669bd2cb728cd6369e9bce5cc1b0775e1d3a27b SHA-256: 932d47cc022da56f4deb2cdbdaf4ca33ce4b2b55763cd92a0d08374847656f89
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a coordinated effort to redirect users. The ML classifier and ClamAV detection further support the malicious nature of the file, classifying it as a phishing or traffic redirection tool. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://realmisterketo.com/uploads/1/3/0/7/130776101/9830039.pdf
    • http://bambusaglobal.com/uploads/1/3/0/2/130289244/roxaxivida.pdf
    • http://mysummit18.com/uploads/1/3/0/5/130590507/6b7d54a5f53d6.pdf
    • http://untabvel.store/uploads/1/3/0/6/130621160/050dae1fa.pdf
    • http://somersetfoodtrail.org/uploads/1/3/0/5/130589208/130589208.html#free+audiobook+s+for+iphone

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010b5.bin
389fa38da9a99dcd9180ca6333d63eb1bb009d72b72edd3647ab0c0b1e438219		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B5 10004 bytes
font_01_sfnt_off000093a1.bin
41d5c9cb4d60b7530e3cfd93a78efd430fe179aa57a8296e74fb8a971da4b0ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93A1 2600 bytes
font_02_sfnt_off00009c86.bin
c3e802e716b49511482ac68c3c8e9f9b4d556be27cf22a952ef1682a9d0bd439		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C86 17260 bytes

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