Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e326832ef33395f…

MALICIOUS

PDF

42.6 KB Authoring application: Scribus
MD5: 6d1e47e8812b6d61cec9cec9130816f7 SHA-1: 217aa57efdef9414a9f3ce9258e141fce0cd3fd9 SHA-256: 5e326832ef33395f1f7bba150e0b2d6ebf8401843dc9b83e7926112ad9ac04d4
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, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier also indicate maliciousness, specifically related to phishing. While no scripts were explicitly extracted, the nature of the embedded links suggests a phishing or content distribution campaign, likely initiated via a spearphishing attachment.

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 https://witoxovi.weebly.com/uploads/1/3/0/3/130379371/7334926.pdf
    • http://win.itechome.com/uploads/2020/01/27/6e45f35d892cc.pdf
    • http://bornadventuregear.com/uploads/1/3/0/5/130539496/savotanigeka.pdf
    • https://dejajipu.weebly.com/uploads/1/3/0/6/130604934/witasorikoxu.pdf
    • http://bovugix.magiksdur.pw/uploads/2020/01/29/6230578.pdf
    • http://brucepeninsulaadventure.com/uploads/1/3/0/4/130488846/jakusuw.pdf
    • http://driving-school.pdio.ca/uploads/1/3/0/6/130621960/8352758.pdf
    • http://fenoxute.ieltsjo.tech/uploads/2020/01/28/9fd8e09a1069.pdf
    • http://naxorijif.urogorod.ru/uploads/2020/01/28/xutep-mawopetodowa.pdf
    • http://alaskadalmatians.com/uploads/1/3/0/5/130539679/joretaxijomija_latufazaluda_botumopuzi.pdf
    • http://portal.createweb24.com/uploads/1/3/0/4/130477126/130477126.html#wavelet+transform+matlab+function
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001289.bin
e7d8bbe1926ea464a11479ca7af0ed9fe4db31e70879f2eb012343361ebc02cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1289 8200 bytes
font_01_sfnt_off000055de.bin
a43b702c1ad01ce973872bad3280a2e679e345b633fa0659c670c80b626dd65b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55DE 2712 bytes
font_02_sfnt_off00005eec.bin
e2768deede1fce83f96644ba30396cd5fbcb1c9d628e68d9d11a803b4610c36b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EEC 16224 bytes

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