Malicious PDF — malware analysis report

Static analysis result for SHA-256 70b40bfe2968ba2a…

MALICIOUS

PDF

34.9 KB Authoring application: LibreOffice Draw
MD5: 77b4d30d8bf90f78ee07ed7721ef5172 SHA-1: c66cb02f91afb45a5fab74dc8f3d9356984193a6 SHA-256: 70b40bfe2968ba2adddbf25729e97d5412f4d324a55fec3be996636ed1d69652
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics, including a critical PDF_SEO_LINK_FARM rule indicating a mass of external links. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly suggest malicious intent. The embedded URLs likely lead to further malicious content or phishing sites, and the document body, though heavily obfuscated, contains references to these URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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 https://gazovabujo.weebly.com/uploads/1/3/0/4/130494801/6016107.pdf
    • http://daisykim.com/uploads/1/3/0/4/130435602/gifawijojokasesinuxa.pdf
    • http://threehappytails.com/uploads/1/3/0/6/130639531/ef6616220a.pdf
    • http://angelialayton.com/uploads/1/3/0/6/130639531/tanopatatazuje.pdf
    • http://chitchatthisthat.com/uploads/1/3/0/2/130288399/befib-wiviv-dojowonol.pdf
    • http://dansmoncerveau.com/uploads/1/3/0/2/130289371/ab8dfb4787056.pdf
    • http://acceleratecleaning.com/uploads/1/3/0/4/130477351/zisazavudujemaw.pdf
    • http://pureclassgeelong.com.au/uploads/1/3/0/4/130476442/fb7ec.pdf
    • http://zobeke.gate2019iitm.online/uploads/2020/01/28/vumerusagir.pdf
    • http://journeysinsixth.com/uploads/1/3/0/7/130776157/bexujaduta.pdf
    • http://naturalgasrefusetruck.net/uploads/1/3/0/4/130483239/59874e30ce3.pdf
    • http://dgias.pl/uploads/1/3/0/5/130550884/nizekizavawoza-pudagarar-jazek-jenulu.pdf
    • http://bodyworkbybarb.com/uploads/1/3/0/7/130739723/130739723.html#bbc+spoken+english+course+free
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012d8.bin
4eb84f8fbe300aee35b245dba7ca136c16b0b79807a51fd85b51fb251c9debef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12D8 7152 bytes
font_01_sfnt_off00003fee.bin
d12e1945699adc080c3e2f49a2c45ee9a70cbb178c18d882f92367fcd923f800		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3FEE 16396 bytes

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