Malicious PDF — malware analysis report

Static analysis result for SHA-256 110428e9e3bf33fa…

MALICIOUS

PDF

38.1 KB Authoring application: LibreOffice
MD5: dd5bec0c745308fad124414d07d07998 SHA-1: b915e99ad8c115fbbf17a54c9bd715f0e84ba9e5 SHA-256: 110428e9e3bf33fab3155dab70de404181a54d1f031667fd816d4d5484396368
152 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics, including ClamAV and an ML classifier, for malicious content. The presence of a large number of external PDF links suggests a link farm or redirection tactic. The document body contains text related to a quiz, which may serve as a lure to disguise the malicious links.

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://appraiseradvance.com/uploads/1/3/0/3/130323232/1402195.pdf
    • http://vixaba.avtotool.ru/uploads/2020/01/29/birogaxudedot-zerujoradigona-kakoro-bakimeti.pdf
    • http://omt�nk.se/uploads/1/3/0/3/130323232/zenotu-vawumafapepo.pdf
    • https://lelixutijalapiw.weebly.com/uploads/1/3/0/3/130312926/2261763.pdf
    • http://attorneys-lawfirmsuseretiredattorneys.com/uploads/1/3/0/2/130274301/damolovogekuzi-jerusunafunez.pdf
    • http://classicrockduo.com/uploads/1/3/0/6/130604823/teturefid.pdf
    • http://bsa-sccc-pack301.com/uploads/1/3/0/4/130483875/130483875.html#quiz+review+mitosis+and+meiosis+answer+key
    • http://xn--omtnk-ira.se/uploads/1/3/0/3/130323232/zenotu-vawumafapepo.pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011b6.bin
b97c246623960f0ab663ce802822ad74aaac8d592d4de8e87aaccfa9c57b5675		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11B6 8688 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.