Malicious PDF — malware analysis report

Static analysis result for SHA-256 face3a76197434ba…

MALICIOUS

PDF

37.0 KB Authoring application: Nitro PDF
MD5: 736ef01579c64790f2380c4fdaadd8c2 SHA-1: b48e1a711ea5d04ea9c854ab83b52caf9cd2d641 SHA-256: face3a76197434ba7e39985752a5c84ce1f89a520a12d30d9b7d19501523f7b1
128 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to multiple external PDF files, a technique often used for SEO poisoning or to distribute malicious content. ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malicious distribution intent. The document body also contains embedded URLs, reinforcing the attack pattern.

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://giornatadellostudente.com/uploads/1/3/0/5/130588703/8507328.pdf
    • http://mmetic.weebly.com/uploads/1/3/0/5/130589083/fosule.pdf
    • http://premaconsulting.com/uploads/1/3/0/2/130272477/7632569.pdf
    • http://moabgearheads.com/uploads/1/3/0/2/130271148/kinusixi.pdf
    • http://twolips.us/uploads/1/3/0/2/130274315/0c523.pdf
    • http://naw.hotelbrisasdeguatape.com/uploads/2020/01/28/wamujusoleva-wagutofizuxug.pdf
    • http://kayleighpeddie.com/uploads/1/3/0/8/130813645/gupur.pdf
    • http://dancinggoatsanctuary.com/uploads/1/3/0/5/130550953/130550953.html#abrazame+fuerte+sue+johnson+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011a1.bin
4de842ce54f875718771e8a2d669523ba0a33d880a4238369fa1c034e8c381a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A1 9080 bytes

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