Malicious PDF — malware analysis report

Static analysis result for SHA-256 5473ef8a046b3af3…

MALICIOUS

PDF

59.7 KB Authoring application: PDFBox
MD5: 4dcb019d1e0f9951bfe421d06d2d3624 SHA-1: 5cfb7ed587e0333ee4bd54d7d84ae0e3c5467fd1 SHA-256: 5473ef8a046b3af3f513eb7a74c380769a65f02fa804265145d76390672b63d5
128 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. This suggests a phishing or malware distribution attempt, where users are lured to click on these links. The ClamAV detection of 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the malicious nature of the file. The document body itself is largely unreadable due to truncation and encoding issues, but the presence of a call-to-action phrase was noted.

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://storewolf.com/uploads/1/3/0/6/130604168/loveruxit_nefosewu_jutufosusobik.pdf
    • http://menfixed.com/uploads/1/3/0/7/130738644/fapajalesokavobol.pdf
    • http://northtexasdoodles.com/uploads/1/3/0/5/130589184/vigulaxegewarusutomu.pdf
    • http://pmcpaintingscom.com/uploads/1/3/0/6/130621220/995cdc0be.pdf
    • http://u3techsolutions.com/uploads/1/3/0/5/130544243/822540.pdf
    • http://profisept.com/uploads/2020/01/28/bubezegogon-fosujovaba-xabitureneve-zikebaso.pdf
    • http://rehphotography.org/uploads/1/3/0/6/130604521/130604521.html#change+active+voice+to+passive+voice+exercise+pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001223.bin
411acf5c4b576702abf6eacf312f4e99d026533066cf463595692db757389a67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1223 9280 bytes
font_01_sfnt_off0000a41e.bin
bd7f53f638db1c1e48db5aaedd76d9c315b55111423f97da6882ddd873ec7721		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA41E 16096 bytes

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