Malicious PDF — malware analysis report

Static analysis result for SHA-256 d88e4edda4f8b213…

MALICIOUS

PDF

35.4 KB Authoring application: OpenOffice.org
MD5: d927826d5e5b0b39921129192038498a SHA-1: 0a0a13e110b88dde93a6ca3cc4e765cf20a6dccd SHA-256: d88e4edda4f8b213369f874b8999c016cc3c457573b281e48323493acffec2d4
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to other PDF files. This indicates a deliberate attempt to create a link farm, likely to distribute malicious content or conduct phishing operations. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports the malicious intent. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.yourdailypayout.com/uploads/1/3/0/7/130739084/8090695.pdf
    • http://wcgreen55.com/uploads/1/3/0/2/130270982/93475729.pdf
    • http://sunicredit.com/uploads/1/3/0/4/130436451/e7eee728.pdf
    • http://sophiacatalina.org/uploads/1/3/0/8/130874409/4d7d1c5122f.pdf
    • http://n4ewater.info/uploads/1/3/0/5/130550748/nirow.pdf
    • http://awocproductions.com/uploads/1/3/0/4/130483633/8218543.pdf
    • http://eastcoastnpl.org/uploads/1/3/0/5/130544232/3707992.pdf
    • http://staywhole.net/uploads/1/3/0/5/130543941/lorerulutikobox_monub.pdf
    • http://www.empresssimonsez.com/uploads/1/3/0/6/130621677/sekabuj-funope-kurilaxawato-sorememezituzik.pdf
    • http://artizots.shop/uploads/1/3/0/4/130488332/fifujarewiza.pdf
    • http://www.winterlinestaging.com/uploads/1/3/0/9/130968956/9652856e.pdf
    • http://hkcfoundationforparkinsons.org/uploads/1/3/0/6/130603824/130603824.html#adafruit+feather+32u4+rfm95+lora+radio

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000311e.bin
b65e083b77b6f269090bd9514c6dc79de37f240ad499f5c808b248ebfcbafa65		 pdf-font-stream PDF embedded font (sfnt) at offset 0x311E 8704 bytes

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