Malicious PDF — malware analysis report

Static analysis result for SHA-256 646346dc9d829513…

MALICIOUS

PDF

38.4 KB Authoring application: OpenOffice Draw
MD5: 20af187c1f577ab49f164f9807cd6163 SHA-1: 10d4b8a5f22e410e04918bb914b6d77319cef281 SHA-256: 646346dc9d829513aa05f51b6ddec78a11c94a555a82b2498e98be18f4b156c1
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File T1059.007 JavaScript

This PDF document contains a large number of embedded URLs, suggesting it is part of a link farm designed for SEO manipulation or to host malicious content. The 'SE_CLICKFIX' heuristic indicates social engineering tactics, instructing the user to execute commands, likely to download and execute a second-stage payload. The presence of embedded URLs and the social engineering lure strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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://juniorspacerangers.org/uploads/1/3/0/6/130603763/9515137.pdf
    • http://rejashorta.com/uploads/1/3/0/7/130775732/46cc7.pdf
    • http://dalotyn.store/uploads/1/3/0/3/130379298/668166499401af.pdf
    • http://menshairreplacementnc.com/uploads/1/3/0/6/130621906/b44641ec3.pdf
    • http://dripexperience.com/uploads/1/3/0/4/130478709/nubegamaruja.pdf
    • http://holycowchocolate.com/uploads/1/3/0/5/130551794/meladatuvek-kifiwuzebovas.pdf
    • http://narellecridland.com/uploads/1/3/0/5/130539795/62823d4e3b664.pdf
    • http://djspizza1.com/uploads/1/3/0/6/130640164/130640164.html#addictive+drums+2+no+gui+boot+found+windows+10

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001250.bin
9b0b5992ef4123833bc3abc8da7335b59abdbb3a3e84a5bf090a352e9571a371		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1250 10172 bytes

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