Malicious PDF — malware analysis report

Static analysis result for SHA-256 5305d2af07988400…

MALICIOUS

PDF

46.0 KB Created: 2020-03-27 07:54:13 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: fe849b420a4ce233d4b85d824d57f6f2 SHA-1: 431c78b669280e15cedc36508ddfc2c3b6e77d2c SHA-256: 5305d2af079884007ba3702e9f92801a34e658c49f4181aa1a0f616eea678951
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The document body, though partially corrupted, contains text related to 'health informatics textbook solutions' and the authoring application 'wkhtmltopdf', suggesting a lure to potentially harmful content disguised as educational material. No scripts were extracted from this sample.

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://djsacademy.com/uploads/1/3/0/5/130550838/130550838.html#health+informatics+textbook+solutions
    • http://www.montanafowlerart.com/uploads/1/3/0/4/130478163/9711634.pdf
    • http://kylejustin.net/uploads/1/3/0/6/130621734/lukodunizal.pdf
    • http://goodcamp.net/uploads/1/3/0/6/130620320/8f844196e1e4.pdf
    • http://kanddrecovery.info/uploads/1/3/0/6/130620649/ketaxeba.pdf
    • http://tsencheng.com/uploads/1/3/0/7/130740514/5526752.pdf
    • http://haddensayersband.com/uploads/1/3/0/7/130775265/pedukoluxi-zeketad.pdf
    • http://lytness.com/uploads/1/3/0/7/130739720/a70e7129e3f81b3.pdf
    • http://sunsethollywood.com/uploads/1/3/0/2/130289220/7487880.pdf
    • http://redroofexteriors.com/uploads/1/3/0/6/130621309/4526911.pdf
    • http://stackism.com/uploads/1/3/1/0/131070456/738272.pdf
    • http://pbyukon.synodnw.org/uploads/1/3/0/7/130775025/dupiwuk.pdf
    • http://mastflutestudio.com/uploads/1/3/0/6/130604358/ranebobebedut_vilogugodepogen.pdf
    • http://prestigeholdingllc.com/uploads/1/3/0/7/130775242/7128235.pdf
    • http://www.britts-blog.com/uploads/1/3/0/8/130814043/3321916.pdf
    • http://club37leadership.com/uploads/1/3/0/7/130740616/wikagemujujoju-ritipakosis.pdf
    • http://gaymer.tv/uploads/1/3/0/5/130551186/5834649.pdf
    • http://corporatelogoexpress.com/uploads/1/3/0/6/130621844/vaxoku.pdf
    • http://www.clayclothmetalcraft.com/uploads/1/3/0/7/130776043/xulasi_jofazitag_jugaxipu_muritodeki.pdf
    • http://allencnsltg.com/uploads/1/3/0/3/130379332/fapinavekezimon.pdf
    • http://the-wild-moon.com/uploads/1/3/0/6/130604771/6d499d3151.pdf
    • http://joshuaosagie.com/uploads/1/3/0/4/130489351/memadabavozigel.pdf
    • http://hostmaster.besttravelmugs.co.uk/uploads/1/3/0/8/130814401/292d58cb2a8439.pdf
    • http://hostmaster.russandhenshaw.com/uploads/1/3/0/6/130621180/wijab.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_off00008a67.bin
b5b984efb85ab11144e056a70a1b264a58c520a198f7ab89dda77656e1382ed7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A67 8168 bytes

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