Malicious PDF — malware analysis report

Static analysis result for SHA-256 354d9e6fd9b89c61…

MALICIOUS

PDF

40.9 KB Authoring application: LibreOffice
MD5: 44549c76c134c9ad180563fada222848 SHA-1: 037f43aa743e85a0073ef93e88ec7c202f950a47 SHA-256: 354d9e6fd9b89c61e27099a36bb0c5fa87b010a8388c28c0dcad66a27487366e
120 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a malicious intent. The document body, though containing educational-themed text, also embeds multiple URLs, suggesting a lure to external, potentially malicious, content. No scripts were extracted from this sample.

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://birthreadyspokane.com/uploads/1/3/0/4/130488631/punifobole.pdf
    • https://lodazetifawiwuk.weebly.com/uploads/1/3/0/2/130289319/bc25efbb11da535.pdf
    • http://beyogaformentera.com/uploads/1/3/0/5/130590400/3163274.pdf
    • http://eganphysiotherapypilates.ca/uploads/1/3/0/4/130435710/2514478.pdf
    • http://dav.kinotani.icu/uploads/2020/01/27/fimamafaladamomi.pdf
    • https://bakonudugudow.weebly.com/uploads/1/3/0/2/130288307/767612.pdf
    • http://ashleighjane-adventure.net/uploads/1/3/0/6/130620567/130620567.html#exercicios+de+porcentagem+com+gabarito+5o+ano

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011c2.bin
2a9c75f1fc551c0e2e392fb0d151801c9000fcae8d2aabcf89893d285d30d306		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11C2 11064 bytes
font_01_sfnt_off00005897.bin
5d7ebd720715cd86529581f1d40cc643f68465477bd430d4be5ff736bc95f798		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5897 16268 bytes

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