Malicious PDF — malware analysis report

Static analysis result for SHA-256 69d1eeb84793d3eb…

MALICIOUS

PDF

34.3 KB Authoring application: OpenOffice.org
MD5: d029f41e47880fd5bcad7f58574ae5f6 SHA-1: 2da7e40927de855357abc095936abe6e43cbe107 SHA-256: 69d1eeb84793d3ebcb16e894f72a885568abdde601b40f8fb2c741639ad16c08
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains a large number of embedded external links to other PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The document body mentions 'Videoder ios app' which appears to be a lure, but the primary malicious activity is the link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://88ground.com/uploads/2020/01/27/6010398.pdf
    • http://narug.arshin.online/uploads/2020/01/28/6bd46d7.pdf
    • http://suja.zarokol.top/uploads/2020/01/29/9664951.pdf
    • http://fenix.pt/uploads/1/3/0/5/130590123/givipixeje.pdf
    • http://marthas-manor.com/uploads/1/3/0/6/130620519/lenasogedonotafanen.pdf
    • http://sevilya-barselona.online/uploads/2020/01/29/1c24b498f2.pdf
    • https://lilijole.weebly.com/uploads/1/3/0/5/130550985/83bd98.pdf
    • https://kesirodorure.weebly.com/uploads/1/3/0/6/130604428/170770.pdf
    • http://artani360.com/uploads/1/3/0/6/130604289/6766545.pdf
    • http://montevistacalvarybaptist.org/uploads/1/3/0/4/130490314/rorilog.pdf
    • http://vebi.avonbox.ru/uploads/2020/01/29/86da08121b6.pdf
    • http://bartolomeilaw.com/uploads/1/3/0/4/130488955/130488955.html#videoder+ios+app

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001213.bin
8f89a17f79a2f07c4a5648b30c280c07500659b7b93fcce73da65e24c2969c3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1213 8196 bytes

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