Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cc0822da384ec99…

MALICIOUS

PDF

43.0 KB Created: 2020-03-20 02:55:14 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 0cfe7ea42f761bcfdf44e9f80bb249d8 SHA-1: 7cfa14d1c17929e7b7456bbae758695efd9ea412 SHA-256: 5cc0822da384ec991b49000479d729401566299429fcaa1541822095f81b977e
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a mass of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to numerous domains. The ML classifier also strongly indicated maliciousness. These links likely serve to redirect users to malicious websites or to manipulate search engine results, potentially for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://cruvenueservices.com/uploads/1/3/1/0/131070829/131070829.html#limiting+reagent+
    • http://butch3001.com/uploads/1/3/0/4/130476083/libotov.pdf
    • http://shrangel.com/uploads/1/3/0/2/130287500/bd0ed41e86eb7a.pdf
    • http://lovelovecreations.com/uploads/1/3/0/9/130969448/zarovanit-belokeloxenenof-bamafusole-rabigime.pdf
    • http://natgomes.com/uploads/1/3/0/9/130969633/fosepaxofijisez-bigexemixipefiv.pdf
    • http://webbshackle.org/uploads/1/3/0/5/130551677/zuzowos-mimimuk.pdf
    • http://charlotteshope.org/uploads/1/3/0/9/130969037/rerokobupe-vexoxixavatowa-rurukodi-golivibe.pdf
    • http://alumni-chiropractic.com/uploads/1/3/0/5/130543543/b9933fa7a8.pdf
    • http://witsetfuel.com/uploads/1/3/0/4/130436171/javixupiw.pdf
    • http://prestigeholdingllc.com/uploads/1/3/0/7/130776817/kukebufoda_likezenizepusej_midozebejalow_pebijigaso.pdf
    • http://www.omaha-auto-glass.com/uploads/1/3/0/2/130272440/nesozuma_lemotatewalelo_retesabufanaj.pdf
    • http://vegan4animals.com/uploads/1/3/0/7/130740112/mowunavetepibifuki.pdf
    • http://www.millerassociateslawoffices.com/uploads/1/3/0/8/130813409/2268743.pdf
    • http://berlin-sachsen-transport.com/uploads/1/3/0/5/130551214/4974070.pdf
    • http://isaacbarrios.com/uploads/1/3/0/5/130589416/e73e807.pdf
    • http://mustangsfood.com/uploads/1/3/0/5/130588735/kikuxebil-vopibaruxebub-sukawuxemixoj-gowufigiki.pdf
    • http://plus34marketing.com/uploads/1/3/0/2/130273993/4205492.pdf
    • http://mhdtechnologycorp.com/uploads/1/3/0/7/130776023/8a8bf1e98eb7ec.pdf
    • http://watercolordreamsart.com/uploads/1/3/0/7/130739727/zivezino.pdf
    • http://hopeformexicomissions.org/uploads/1/3/0/7/130739392/3174780.pdf
    • http://alsboutique.shop/uploads/1/3/0/8/130813416/zegebegipogez.pdf
    • http://juliadriscoll.me/uploads/1/3/0/7/130776070/selifinozekawulufo.pdf
    • http://www.amoureminks.com/uploads/1/3/0/6/130620689/629a6e263.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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/
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000075e4.bin
7cc0534183ad3a0fabeb5fcbe67e3e6dffcf79b9dfacc76ae42e42361188d710		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75E4 7880 bytes
font_01_sfnt_off00009495.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9495 2652 bytes

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