Malicious PDF — malware analysis report

Static analysis result for SHA-256 41886f2c5151f96e…

MALICIOUS

PDF

43.7 KB Authoring application: PDF Studio
MD5: 6c5dff95998a661952f4314c9da032d8 SHA-1: b3e59260ba511dd969420b8dfa86ae7778daf7fd SHA-256: 41886f2c5151f96e6d548d8462742f37747d210d44e298dbae6cf139d37f7c21
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links pointing to other PDF files across various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious classification. No scripts were extracted from this sample, and the document body content was heavily obfuscated and unreadable.

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://www.mychoice-thefilm.com/uploads/1/3/0/5/130589429/dadijasafelixi.pdf
    • http://nebraskansunitedforthegoodlife.net/uploads/1/3/0/8/130874278/6944225.pdf
    • http://www.theruffugees.org/uploads/1/3/0/6/130621997/didifafarot.pdf
    • http://shopbykddesigns.com/uploads/1/3/0/6/130639246/6e644fd339.pdf
    • http://tuyyophotography.com/uploads/1/3/0/8/130814830/ee55bfa.pdf
    • http://mynumbereddays.online/uploads/1/3/0/6/130604539/b2a00247c.pdf
    • http://bentworthcommunitycenter.com/uploads/1/3/0/2/130274267/tixuk_movomonarepi.pdf
    • http://www.coachsmith.net/uploads/1/3/0/7/130740086/fovete.pdf
    • http://exocognitive.com/uploads/1/3/0/5/130590122/sesekibidimeka.pdf
    • http://yonatan77.octarinesec.com/uploads/1/3/0/6/130605443/b3a94920.pdf
    • http://orbitfiction.net/uploads/1/3/0/2/130288321/gubagibirudovet.pdf
    • http://www.thegrowingseedsoflove.org/uploads/1/3/0/6/130604986/303fc2bb116e.pdf
    • http://orderyourbluebook.com/uploads/1/3/0/6/130639283/b83ae55.pdf
    • http://girlfact.com/uploads/1/3/0/6/130621003/fufigomuwusiwetaxof.pdf
    • http://spctermites.com/uploads/1/3/0/4/130436271/1721205.pdf
    • http://wondertraveltours.xsideas.com/uploads/1/3/0/7/130775197/130775197.html#how+does+thermos+flask+prevent+transfer+of+heat+by+conduction+convection+and+radiation

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004302.bin
d907c570f1f8f2d62f38d7529dbf77de46ca3a1917ec53aca7a78bae59874b04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4302 2616 bytes
font_01_sfnt_off00004ef4.bin
fa322ae55af914e57e04a4d777e9f1300699f28525c0f0fda9da2c77062ec0dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4EF4 8352 bytes

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