Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0ce87dfe949bf8b…

MALICIOUS

PDF

64.5 KB Authoring application: Poppler-utils
MD5: 64270e240f37058bf6b26811a776df5f SHA-1: f86cba5ce64c1f12db40530c9de84642868ba4ac SHA-256: c0ce87dfe949bf8b98c41552485e9bc3513dcf9f791d7f168c1845451daf916e
128 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM', suggesting an attempt to redirect users to malicious websites. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malware distribution motive. The presence of a visual download button reinforces the lure. No scripts were extracted, but the link farm and detection indicate a likely phishing or malware delivery attempt.

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://bellcreekagility.com/uploads/1/3/0/4/130435826/29bcaf5a1b4a103.pdf
    • http://kowuxosir.chinafication.com/uploads/2020/01/29/ebfa8eba.pdf
    • http://vapeheisen.com/uploads/1/3/0/2/130289503/5531877.pdf
    • http://fid.trubafasonka.ru/uploads/2020/01/28/07f45ad.pdf
    • https://kitasomoma.weebly.com/uploads/1/3/0/5/130541552/764ee2a74579.pdf
    • http://tcsonline.net/uploads/1/3/0/6/130621116/130621116.html#google+chrome+apk++for+mac

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001177.bin
5fac1a6ed071975f25d2f2084d2f668fb8fa9664b78b0b276940a15076d6b8e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1177 9640 bytes

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