Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0048128bc876fa1…

MALICIOUS

PDF

33.1 KB Created: 2020-06-03 19:53:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 982f0cc3c9a8ab41ed7fe356a6945672 SHA-1: ca7865299078987477815806fb79a8e41f8649f8 SHA-256: e0048128bc876fa15cd7feb5dbf649332858bf21bc144d4381f40875d4eca26b
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF files on different domains. The document body contains text related to 'wkhtmltopdf' and a URL that appears to be a download link, suggesting a potential lure or distribution mechanism. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves redirecting users to a network of external resources, likely for SEO spam or to serve malicious payloads.

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://triplelunagoddess.com/uploads/1/3/1/4/131407494/131407494.html#htc+zil+sesi+indir
    • http://theconditionedstrength.com/uploads/1/3/1/4/131455158/e3e1ac7807.pdf
    • http://melaminecleaning.com/uploads/1/3/0/2/130272638/8aadecc29a485.pdf
    • http://thehammersolutions.net/uploads/1/3/0/7/130739715/vogabofuxelaparovege.pdf
    • http://mx.buffalolake.net/uploads/1/3/0/6/130604378/bowurew.pdf
    • http://questlanguage.club/uploads/1/3/0/4/130435644/jisofaj_jepawuvasube_wejaderogud.pdf
    • http://hammerheadtaiyaki.com/uploads/1/3/1/3/131384503/2428049.pdf
    • http://fanechistoc.net/uploads/1/3/0/4/130477039/fijogekuxor.pdf
    • http://blu-ray-sales.com/uploads/1/3/1/8/131856100/sunabab-lefajeguxumunu-xikak.pdf
    • http://lgbtqinclusiveclassrooms.com/uploads/1/3/0/2/130273931/metumezix.pdf
    • http://triplelunagoddess.com/uploads/1/3/1/4/131407494/terms.html
    • http://triplelunagoddess.com/uploads/1/3/1/4/131407494/dmca.html
    • http://triplelunagoddess.com/uploads/1/3/1/4/131407494/policy.html
    • https://koxifolaligu.files.wordpress.com/2020/05/sadopefopixofozi.pdf
    • https://lozogowiveb.files.wordpress.com/2020/05/39629506221.pdf
    • https://mijawodemim.files.wordpress.com/2020/05/jexasomagukarulatofira.pdf
    • https://wesegakivur.files.wordpress.com/2020/05/zokajurixaruv.pdf
    • https://fipowunifagu.files.wordpress.com/2020/06/26410885417.pdf
    • https://jazasugi116120722.files.wordpress.com/2020/06/divokidovudotomuvanir.pdf
    • https://jixozab.files.wordpress.com/2020/06/minekebuxot.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_off00005483.bin
15fe564728a0a381c4cdd6d415f2429b3e13eb0dd5d61cda8c3f5f187164e9af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5483 10904 bytes

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