Malicious PDF — malware analysis report

Static analysis result for SHA-256 aff823001e3f84cb…

MALICIOUS

PDF

37.9 KB Authoring application: PDFBox
MD5: 9cdd3f34212476e5fd987521f80dce0a SHA-1: e6b76e1148942d2ad949e402eabcaab821c8841f SHA-256: aff823001e3f84cb15d31da95e44acd771535634f28143bd124e3158ee84b5e2
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external websites, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as Pdf.Phishing.TtraffRobotInstall. The document body, though truncated, mentions '3 bedroom house floor plans', suggesting a lure to disguise the malicious link farm. The primary attack pattern involves redirecting users to a network of potentially malicious sites.

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://midcenturymomern.com/uploads/1/3/0/4/130483087/5188078.pdf
    • http://gadaboutplaces.com/uploads/1/3/0/4/130490476/6317552.pdf
    • http://www.shop.strongcap.com/uploads/1/3/0/5/130542936/xapidebixonava-kefikir-dusotoguxexoz.pdf
    • http://snailcoclothing.com/uploads/1/3/0/8/130814169/gigujevokigiguneseno.pdf
    • http://kertzmanracing.com/uploads/1/3/0/5/130542859/7149691.pdf
    • http://www.trtidalwave.com/uploads/1/3/0/7/130739254/2596919.pdf
    • http://agilecreators.com/uploads/1/3/0/5/130543019/durizizero.pdf
    • http://michaelmackail.com/uploads/1/3/0/6/130639028/raxuwunozef.pdf
    • http://telasnotejidas.net/uploads/1/3/0/6/130604631/juberulazekadig-savukejuwide-dalarufa-mesukolagijef.pdf
    • http://musicaturing.com/uploads/1/3/0/5/130551090/1679685.pdf
    • http://creepyfuckingstalker.com/uploads/1/3/0/3/130379219/jirorem.pdf
    • http://peanutgalleryphotography14.com/uploads/1/3/0/3/130313595/130313595.html#3+bedroom+house+floor+plans
    • http://michaelmackail.com/uploads/1/3/0/6/130639028

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003266.bin
2c32c498f23db3cae400dac070c72b38d41a5d5dbe5041cbe08e7cee44e1acfd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3266 2648 bytes
font_01_sfnt_off00003df8.bin
19bacb2d8ca8b5b2a526818ca8ce8c3986dcb7d4add9a5283a0a24838bcb4d98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3DF8 7484 bytes

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