Malicious PDF — malware analysis report

Static analysis result for SHA-256 40744f66052f44dd…

MALICIOUS

PDF

37.2 KB Created: 2020-06-05 14:40:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a3d188b696db91ecd5cdddf246f9c3c3 SHA-1: fa2d55fdccb85ffd059b4bc844db2e556c85200b SHA-256: 40744f66052f44dd8ea47b3f62d013a0ddfc31b119fffe4bda55236b3a1da2f8
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to other PDF files on similar domains. The document body text mentions downloading a song, which serves as a lure. The primary malicious URL identified is http://defunkedband.com/uploads/1/3/0/6/130604499/130604499.html#download+song+kangna+tera+ni+sanu+ka. This suggests a campaign focused on distributing malware through deceptive links disguised as content downloads.

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://defunkedband.com/uploads/1/3/0/6/130604499/130604499.html#download+song+kangna+tera+ni+sanu+ka
    • http://pinkeucalyptusjewelry.com/uploads/1/3/0/7/130740427/9872037.pdf
    • http://20y.undesirable.us/uploads/1/3/0/6/130620321/6124435.pdf
    • http://dayseye.org/uploads/1/3/0/6/130639935/fa0c9b17b65a.pdf
    • http://lidoapartments.org/uploads/1/3/0/8/130814237/jugiwowatujageju.pdf
    • http://number12restaurant.co.uk/uploads/1/3/0/7/130775092/pepuwebata.pdf
    • http://postmaster.touttoet.nl/uploads/1/3/0/5/130590367/nafewutusow_moburedawad_xanuweda.pdf
    • http://rain.boston/uploads/1/3/0/8/130874627/9999220.pdf
    • http://defunkedband.com/uploads/1/3/0/6/130604499/terms.html
    • http://defunkedband.com/uploads/1/3/0/6/130604499/dmca.html
    • http://defunkedband.com/uploads/1/3/0/6/130604499/policy.html
    • https://puvunitulev448898520.files.wordpress.com/2020/06/wotodavuzedukidel.pdf
    • https://wisowewemuj.files.wordpress.com/2020/06/vanaxigufizofijowum.pdf
    • https://tavinavefoj.files.wordpress.com/2020/06/76402767061.pdf
    • https://botitovut.files.wordpress.com/2020/06/genivegi.pdf
    • https://zukebesigo.files.wordpress.com/2020/06/dinaxukigireniroka.pdf
    • https://pimikineli.files.wordpress.com/2020/06/31672303659.pdf
    • https://wotezus.files.wordpress.com/2020/06/rakopasumas.pdf
    • https://gopenefo.files.wordpress.com/2020/06/77297129560.pdf
    • https://jopovoruva.files.wordpress.com/2020/06/gonotimad.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006321.bin
4dc09ebb4160200b67e535d99c4fc8277091ab55de643d8b05b9cce8149da719		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6321 11020 bytes

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