Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0818c2a1ec1bbe5…

MALICIOUS

PDF

55.0 KB Authoring application: Inkscape
MD5: ec94363222cd656b8164f8d01a50b14d SHA-1: 900b7aeb5b5478487e364e106345a021fd53faab SHA-256: f0818c2a1ec1bbe569a70d870632768f6e21a2b02fcc585c44ac8beaf0553221
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The document body, though partially corrupted, contains text related to medical diagnostics, which may serve as a lure. No scripts were extracted from this sample.

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://timings.ca/uploads/1/3/0/7/130776102/68c192b4f5e6ce.pdf
    • http://www.katherinepowersphoto.com/uploads/1/3/0/8/130813953/fesovanolu-pugotejizuzag-ponevafatatosok-buvetivovoz.pdf
    • http://www.henriettewinther.dk/uploads/1/3/0/5/130551487/7412797.pdf
    • http://www.marlindivecenter.com/uploads/1/3/0/2/130270912/konibolef-mavomatomewetor-fexabizuwi-gobixajan.pdf
    • http://newstokenpool.com/uploads/1/3/0/2/130289652/gitir.pdf
    • http://brittneythebellydancer.com/uploads/1/3/0/7/130738534/jimovawawo.pdf
    • http://overlandfund.com/uploads/1/3/0/5/130550708/ponozisexubipu.pdf
    • http://worldwide.international/uploads/1/3/0/5/130550713/debudumovuk.pdf
    • http://genxtraining.ca/uploads/1/3/0/5/130542972/sipijomamitedizeg.pdf
    • http://passiveprofiteer.com/uploads/1/3/0/7/130776336/4397251.pdf
    • http://cr3ds.com/uploads/1/3/0/4/130488331/dajufozifolaxusog.pdf
    • http://pomjc2.bdgct.com/uploads/1/3/0/2/130292179/130292179.html#diagnostico+de+anemia+normocitica+normocromica

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065e1.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65E1 16036 bytes
font_01_sfnt_off00007d98.bin
364889bb1db588eb7fe8f75557df543288656526f0b7a760c9d263cbe422de28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D98 10588 bytes

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