Malicious PDF — malware analysis report

Static analysis result for SHA-256 349abe687a5548ec…

MALICIOUS

PDF

35.6 KB Authoring application: LibreOffice
MD5: cb3e9d6721a8f266fa0871e75d192e2a SHA-1: c9904a3bca2a91008f0f18f06e84cab93ad50a28 SHA-256: 349abe687a5548ecd78eb5eb455c3088dbfcb49ecb360f09df419ca574e8de7a
152 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, with the primary URL pointing to a malicious PDF. The document body text, though corrupted, mentions 'Snes classic original kernel download' and includes the same URLs, suggesting a lure to download further malicious content. ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the phishing and redirection nature of this document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://jojel.pideli.icu/uploads/2020/01/28/a7bd46aaa3.pdf
    • http://bali-immo-villa.com/uploads/1/3/0/6/130604018/jibebefivamatevi.pdf
    • http://themusiclaboratory.com/uploads/1/3/0/4/130490928/5f771bda296.pdf
    • http://asharedmemory.com/uploads/1/3/0/6/130621187/e04c848e048b.pdf
    • http://dollarsfordoorsllc.com/uploads/1/3/0/5/130543207/derofed.pdf
    • http://ravenheim.net/uploads/1/3/0/4/130483852/9fcf9590e39aae.pdf
    • http://pqlpottery.com/uploads/1/3/0/4/130435955/dumewawovewenenu.pdf
    • http://trentriverdesigns.com/uploads/1/3/0/2/130272481/130272481.html#snes+classic+original+kernel+download

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001113.bin
848d4bc9709dcc463683c7cb6cf89a0d1bc96a48d0a81eb6901493ec4b59dfab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1113 7728 bytes
font_01_sfnt_off00004fc9.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FC9 2652 bytes

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