Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e8dee6c2647ef21…

MALICIOUS

PDF

39.8 KB Created: 2020-06-05 03:49:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9cc8d3c4183da1a10200d350f5ff221b SHA-1: ec2df98f1238ca322890562abf7fdd95a3be55d0 SHA-256: 2e8dee6c2647ef2123165771dbb914f33c8daddcd2272bf6150003cfa1018768
92 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for SEO spam or phishing campaigns. The document body, though partially corrupted, contains text referencing 'Whatsapp para blackberry curve', suggesting a lure to a potentially malicious website. The PDF_SEO_LINK_FARM heuristic firing indicates a large number of external links, and the ML classifier strongly suggests malicious intent. No scripts were extracted from this sample.

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://underthestarssleepoverparties.co.uk/uploads/1/3/0/5/130588376/130588376.html#whatsapp+para+blackberry+curve
    • http://nhsaustraliamedicalcentre.com/uploads/1/3/0/6/130640125/beef5.pdf
    • http://mail.westfordregency.com/uploads/1/3/1/3/131379375/sugukugajexilez-fekigamikujixug-mozuvatugekum.pdf
    • http://residentresiliency.net/uploads/1/3/0/4/130435577/serowumedekimel.pdf
    • http://patriotplayerstheatre.com/uploads/1/3/0/9/130969830/99f977.pdf
    • http://mail.bold-essentials.com/uploads/1/3/0/3/130379634/lorujemulejirimape.pdf
    • http://riskconsulting.ca/uploads/1/3/1/1/131164504/rivobuzaturevix-biguxasogate.pdf
    • http://serendipityinteriordesign.com/uploads/1/3/0/5/130590139/lotekivimimawu-gubuvo-powukagodi.pdf
    • http://buddingbakers.co.uk/uploads/1/3/0/7/130775584/fuzirikemo-ribuj-vubuzaw-fosejafabol.pdf
    • http://underthestarssleepoverparties.co.uk/uploads/1/3/0/5/130588376/terms.html
    • http://underthestarssleepoverparties.co.uk/uploads/1/3/0/5/130588376/dmca.html
    • http://underthestarssleepoverparties.co.uk/uploads/1/3/0/5/130588376/policy.html
    • http://buddingbakers
    • https://kenubid.files.wordpress.com/2020/06/10737639832.pdf
    • https://jugajitowep861896268.files.wordpress.com/2020/06/xebebej.pdf
    • https://kopenisof.files.wordpress.com/2020/06/11129886169.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_off00006c81.bin
31737a59002ace2fa0fbd8671d4147986c968421d6e9046df2e6005f032f327d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C81 11648 bytes

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