Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9975b6af9d4f9dd…

MALICIOUS

PDF

36.4 KB Authoring application: LibreOffice
MD5: 7cffad50be6120905e6e73a4b4ba8616 SHA-1: 79ba34d7f2ba1f6ae11490187041fc576aec4f0e SHA-256: d9975b6af9d4f9dd25bba549aa1f71a1c2c3c2abdcf5aa00516f18d0bf5c9f3d
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content, as suggested by the 'PDF_SEO_LINK_FARM' heuristic. The ClamAV detection further supports its malicious nature. No scripts were extracted, and the document body content is heavily corrupted, making it difficult to ascertain a specific lure beyond the link farm.

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://3840emerald.com/uploads/1/3/0/5/130590663/saramejiperewatevef.pdf
    • http://www.acsaver.net/uploads/1/3/0/3/130313536/1950474.pdf
    • http://nationalautomobilemuseum.org/uploads/1/3/0/6/130639629/mezivutev-noxefoze.pdf
    • http://www.educru.net/uploads/1/3/0/8/130813144/8371260.pdf
    • http://techstyles.shop/uploads/1/3/0/2/130272963/fbe4c7e2a.pdf
    • http://www.stephmatarazzo.com/uploads/1/3/0/6/130605289/0cc9e0a7ab39.pdf
    • http://artbyrandy.net/uploads/1/3/0/8/130814432/vetiparizowodikax.pdf
    • http://americangrace.net/uploads/1/3/0/2/130270985/b0945cb59a6d27b.pdf
    • http://bestmarinecomposites.com/uploads/1/3/0/7/130739346/waligud.pdf
    • http://www.savagebarberclothing.com/uploads/1/3/0/6/130604769/1952586.pdf
    • http://worldwidefactoring.com/uploads/1/3/0/6/130639646/kufugalow_zanuxakiwamusu_sapibe.pdf
    • http://ormansite.com/uploads/1/3/0/5/130590030/tikajimipuda-badilexel.pdf
    • http://turaneenterprises.net/uploads/1/3/0/7/130740530/8023111.pdf
    • http://timevessel.com/uploads/1/3/0/6/130640174/lilujirinomefe.pdf
    • http://sfsparkscheerleading.com/uploads/1/3/0/6/130604564/0fbaba0aa0b53.pdf
    • http://campingdishwasher.com/uploads/1/3/0/6/130639934/beposupam-mufaje.pdf
    • http://matthewsncgutters.com/uploads/1/3/0/8/130874377/bc75a94f528b27.pdf
    • http://sevenflowersfloralshop.com/uploads/1/3/0/6/130620982/lojufi-mijalemavem-wosovexip-bugudirotado.pdf
    • http://machin-machine.org/uploads/1/3/0/5/130550724/xagarimegoju.pdf
    • http://douniuniuwanfa.br3h.com/uploads/1/3/0/5/130539120/130539120.html#surat+al+mulk+ayat+1-30+mp3

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030ee.bin
82057f12bdc7ea6250699efbfb148f74f940e25930b34c4140721cb4e6a07588		 pdf-font-stream PDF embedded font (sfnt) at offset 0x30EE 7432 bytes

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