Malicious PDF — malware analysis report

Static analysis result for SHA-256 da727d516714a159…

MALICIOUS

PDF

33.7 KB Authoring application: Poppler-utils
MD5: 33932fa1b20233afd688108a9130d273 SHA-1: e9e2dde923e3412df3b462e550de4642239415ac SHA-256: da727d516714a159a9e400e8b5a547a2a670420afad77aa8e903e99e61246432
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical PDF_SEO_LINK_FARM rule, indicating a large number of external links. ClamAV also detected it as Pdf.Phishing.TtraffRobotInstall. The embedded URLs, primarily pointing to domains with generic names and file paths, suggest a phishing or malware distribution campaign. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://metuchendentistry.com/uploads/1/3/0/5/130590431/3e60906e0b54.pdf
    • http://ponyexpressprints.com/uploads/1/3/0/5/130550704/d366537b6924e9.pdf
    • http://dog.rutv.fun/uploads/2020/01/28/7805471.pdf
    • http://qigongfirenze.com/uploads/1/3/0/4/130435947/466284.pdf
    • http://alexandraforsythermt.com/uploads/1/3/0/5/130588412/xogozadodate.pdf
    • https://ruzozilesu.weebly.com/uploads/1/3/0/2/130270781/a4e5e5.pdf
    • https://vezopozezozokag.weebly.com/uploads/1/3/0/5/130590191/fipag.pdf
    • http://newperspectivemedical.com/uploads/1/3/0/4/130479350/130479350.html#alien+movie+video+song

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001280.bin
6517c1517fa093f97eccfdee4ef5282bdec8b460262c21ad641626aaf72f5efd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1280 7960 bytes
font_01_sfnt_off0000483e.bin
1b3f82cd74c5b6671cc0c0d4a6c7877b74bb57ca469b2a61ef541918e41af838		 pdf-font-stream PDF embedded font (sfnt) at offset 0x483E 2652 bytes

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