Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ca89cdd922682cc…

MALICIOUS

PDF

41.0 KB Authoring application: PDFedit
MD5: 61eb1d5ee61feb5da3475bb0f467994d SHA-1: a3fbe424170ae65bfa993a8cd64adb165da643f6 SHA-256: 4ca89cdd922682cc6ef0c544aafed33b5188fd0ee93858b1aa322c21fe6ff380
128 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents, a technique often used for SEO spam or to redirect users to malicious sites. ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or traffic redirection intent. The document body contains a call-to-action phrase, reinforcing the lure.

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://nauticflclub.org/uploads/2020/01/29/ea12f8856.pdf
    • http://brian-amos.com/uploads/1/3/0/6/130621378/3890854.pdf
    • http://worldbizmagazine.com/uploads/1/3/0/3/130313203/teripalaxokoxup.pdf
    • http://mumewig.motivationluxury.com/uploads/2020/01/29/2a2343.pdf
    • http://thompsonzing.com/uploads/1/3/0/6/130639747/babifukafafawa_juwuwan.pdf
    • http://techconnectwest.net/uploads/1/3/0/5/130547069/da641ae3047.pdf
    • http://phsmostl.com/uploads/1/3/0/4/130483279/jetufanifulesego.pdf
    • http://ful.myagent.pro/uploads/2020/01/28/3223978.pdf
    • http://msestate.co.jp/uploads/1/3/0/5/130588769/xabimupupati-zizolunonik-sekodovevawefok-vabenoneridil.pdf
    • http://momentum-behavioral.com/uploads/1/3/0/5/130541656/gukuxejazoximilak.pdf
    • http://nupelicanparty.org/uploads/1/3/0/2/130271212/130271212.html#axl+full+movie+tamil+dubbed+free

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012b2.bin
25c0f7a5f11030898da2af345e3396108006debf5cd1d2cff9e6cb9440c9e959		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12B2 8388 bytes
font_01_sfnt_off00005f67.bin
148db17229ebf2ba589e955b914ac92c83c9e5963a3af7c1f4a5b30ba1e21042		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F67 5032 bytes

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