Malicious PDF — malware analysis report

Static analysis result for SHA-256 73118675e2bcc52f…

MALICIOUS

PDF

45.7 KB Authoring application: Scribus
MD5: f6b172ac31a06447546933ffc16c2ea1 SHA-1: 043d6858e61128997ad88282ca5d620d389acecb SHA-256: 73118675e2bcc52f979be97a4ad85b4d6bcd4315f27bb9c151857af5ee692526
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a coordinated effort to distribute content or manipulate search engine results. The ClamAV detection and ML classifier further confirm the malicious nature of the file, classifying it as phishing-related. No scripts were extracted, but the structure strongly suggests a malicious intent to redirect users to potentially harmful content.

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://chloelgroup.com.au/uploads/1/3/0/6/130639443/lifewalun-rewixe.pdf
    • http://nice-body.net/uploads/1/3/0/5/130550858/3567283.pdf
    • http://jarkkopartanen.com/uploads/1/3/0/6/130639357/5541907.pdf
    • http://sandyburlesoneportfoliowfu.com/uploads/1/3/0/6/130620474/1055658.pdf
    • http://bodysoulhealing.net/uploads/1/3/0/5/130543063/kovuvumosife-kakobitivuvezo.pdf
    • http://gomriz.com/uploads/1/3/0/4/130488469/130488469.html#baahubali+2+film+hd
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00005b54.bin
1911d843637bc7544265ba5c78ceb69abdbfe78aa9cbe6a76aa01a1e18492174		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5B54 23072 bytes
font_00_sfnt_off0000120c.bin
058783a5d67b230df33735d872746d8118eb34dc798e48887981360501a765ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x120C 8552 bytes

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