Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1012173f642ed68…

MALICIOUS

PDF

32.2 KB Authoring application: LibreOffice Draw
MD5: 18044ad734ebf1b11f0bb390ee252fd5 SHA-1: 4394bfe1ad4d3a56aa2c189f62d68e03f65c8c22 SHA-256: a1012173f642ed68faaa2b35d379f70ed7c9d3e1b7f3b0c6c4cc792883ce817d
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDF files, indicating a link farm for SEO manipulation. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, contains references to downloading files, reinforcing the malicious purpose.

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://deranene.funblog.online/uploads/2020/01/29/8583105.pdf
    • http://nailvenue.com/uploads/1/3/0/5/130551554/8b9f89d38.pdf
    • http://keshashouseoftranquility.com/uploads/1/3/0/2/130272080/tuvidavuvimegitup.pdf
    • http://yogaschoolkit.com/uploads/1/3/0/6/130640141/4978030.pdf
    • http://angelajobin.com/uploads/1/3/0/5/130589159/saxedoxowezin-majemamasi-majufureg.pdf
    • http://a-lab.weebly.com/uploads/1/3/0/2/130273884/3560667.pdf
    • http://mindset-hypno.com/uploads/1/3/0/6/130604962/673805.pdf
    • http://mountainofgod.org/uploads/1/3/0/3/130379117/wixoluwe-buzonulu-fakovoxubik.pdf
    • http://milledgevillepd.org/uploads/1/3/0/4/130483949/doduzekesomozapufo.pdf
    • http://coinsofthetrade.com/uploads/1/3/0/4/130435751/6098282.pdf
    • http://sweetestdreams.org/uploads/1/3/0/6/130640009/130640009.html#unity+alan+walker+files+download

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001259.bin
9306cfa86264711bc181708db56bbf9728d520dd9a99e36f3e0fdcf87edfa402		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1259 8356 bytes

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