Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8ffffb6cff2d3d4…

MALICIOUS

PDF

35.1 KB Authoring application: SWFTools
MD5: 4d45ad37fdf2ecc827a47d9ea654c9bb SHA-1: b3fa361f591ac9f0ae63dba63b8b8281415dc2dc SHA-256: a8ffffb6cff2d3d4c7ec9de11dd84ff2e276063f96a8827b61de91458b3ffeb4
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to distribute further malicious content. The document body text, while garbled, mentions 'Ncert accountancy class 12 pdf download', suggesting a lure to trick users into clicking the malicious links. The ClamAV detection 'Pdf.Dropper.Agent-7675049-0' further supports the malicious nature of this file, indicating it acts as a dropper for other malware.

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.Dropper.Agent-7675049-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7675049-0
  • 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://bnaiisraelnc.com/uploads/1/3/0/7/130776521/3296718.pdf
    • http://capitalpollinatornetwork.com/uploads/1/3/0/5/130546153/2313048.pdf
    • http://mhlarue.com/uploads/1/3/0/2/130287269/zapepinurov.pdf
    • http://metastudio.io/uploads/1/3/0/5/130588842/2528812.pdf
    • http://persucarhipa.net/uploads/1/3/0/5/130540683/1338844.pdf
    • http://vovusaguf.kazgroup.online/uploads/2020/01/28/wolikinin.pdf
    • http://cpsaltlakecity.com/uploads/1/3/0/5/130550654/sodajonukokupik.pdf
    • http://sztvmedia.com/uploads/1/3/0/4/130476024/dugivobili.pdf
    • http://nashvilledrones.com/uploads/1/3/0/5/130551041/7472260.pdf
    • http://katietackesphotography.com/uploads/1/3/0/4/130490876/07e2b1ea20d7f.pdf
    • http://myentouragemusic.com/uploads/1/3/0/6/130603948/130603948.html#ncert+accountancy+class+12+pdf+download

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011de.bin
61fd2a167e1063cdd6d043397118c1e798b141fed041e504d37e41ad275b7faf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11DE 7568 bytes

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