Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0b2b20473a1a072…

MALICIOUS

PDF

47.4 KB Authoring application: GIMP
MD5: f0ec4c101eb42331a4e288097a1a669d SHA-1: b38a03bccd42973e5b1ba99176fa85e8bbf47fc9 SHA-256: e0b2b20473a1a072ec36642679942856ab04b67345e068224162179fcf7d15f0
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links to external PDF documents, a technique often used for SEO manipulation or to distribute malicious payloads. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body, though heavily obfuscated, contains URLs that are consistent with the link farm heuristic. 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://naukajazdywroclaw.com.pl/uploads/1/3/0/2/130271041/a44c0.pdf
    • http://europimec.org/uploads/1/3/0/3/130323900/fakakogij_gifubepuri.pdf
    • http://offerup-item-details9480298.com/uploads/1/3/0/2/130289344/3518596.pdf
    • http://thelunakit.com/uploads/1/3/0/7/130738919/givijukamat.pdf
    • http://jameswagner.net/uploads/1/3/0/6/130604799/meturivapopuguti.pdf
    • http://peninsulafilmfestival.com/uploads/1/3/0/6/130604615/6263723.pdf
    • http://n947rv.com/uploads/1/3/0/3/130323515/mepafekikofirif.pdf
    • http://triumphbikerentals.com/uploads/1/3/0/3/130379740/gimegobojolel_baguvukoratozu_nebefisibum.pdf
    • http://tupa.vinil-koritsa.ru/uploads/2020/01/29/f229e13a5c8.pdf
    • http://zoeapos.com/uploads/1/3/0/3/130323566/4758550.pdf
    • http://oldschoolmechanics.com/uploads/1/3/0/2/130274269/tenevijex-rimej.pdf
    • http://juliejesternewman.com/uploads/1/3/0/5/130550682/130550682.html#executive+summary+for+marketing+report

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000130f.bin
39931fb26edfd130d1a8c388519799549000852b0dbb851cec62095282cae3c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x130F 8232 bytes
font_01_sfnt_off00007223.bin
5d7ebd720715cd86529581f1d40cc643f68465477bd430d4be5ff736bc95f798		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7223 16268 bytes

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