Malicious PDF — malware analysis report

Static analysis result for SHA-256 08a2cb549472a7ca…

MALICIOUS

PDF

45.6 KB Created: 2020-04-02 18:35:47 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: d6f356903c32851f381744bf043812fc SHA-1: ca194f33f650f78fd7f5e24f02d6c8bd5bce24a2 SHA-256: 08a2cb549472a7cabe45c4611458dd7411f4ba570fa0408416287d52cf85b5b1
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, identified as a PDF link farm, suggesting a malicious SEO or content distribution scheme. The ML classifier strongly flagged this PDF as malicious. While no scripts were extracted, the presence of numerous URLs indicates an attempt to redirect the user to potentially harmful content hosted on external domains.

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://geminihairgem.com/uploads/1/3/0/7/130740175/130740175.html#gina+coffee+maker
    • http://thepermacultureinn.com/uploads/1/3/0/7/130739503/sawiludofire.pdf
    • http://100firesmoto.com/uploads/1/3/0/6/130621908/4794479.pdf
    • http://weekendbriefs.com/uploads/1/3/0/4/130476069/gezoxebotuvisipugit.pdf
    • http://rockymtnfirepro.com/uploads/1/3/0/7/130775646/kufazesi-lowujaxurifaxib-jabigevowivi.pdf
    • http://libertyrockoutdoors.com/uploads/1/3/0/8/130874130/rizoraxa.pdf
    • http://littlebachbythejetty.com/uploads/1/3/0/5/130590363/e1af5d71f42d.pdf
    • http://5northtown.com/uploads/1/3/1/3/131398543/a4f34a13232a.pdf
    • http://pratermarketingandmedia.com/uploads/1/3/0/4/130483842/4162920.pdf
    • http://global-towers.net/uploads/1/3/0/5/130590164/milusiruru.pdf
    • http://monalisachu.com/uploads/1/3/0/2/130271206/5697838.pdf
    • http://oldorchardcrossfit.com/uploads/1/3/1/0/131070491/dbb4aa.pdf
    • http://staclaritasc.com/uploads/1/3/1/0/131070197/piwugub.pdf
    • http://novelconversations.org/uploads/1/3/0/4/130435937/7447618.pdf
    • http://gpradartech.com/uploads/1/3/0/6/130621435/5240058.pdf
    • http://ramblinghouseshow.com/uploads/1/3/0/5/130542859/febakulewukonit.pdf
    • http://anjtransport.com/uploads/1/3/0/2/130273610/xifaf_damuno_bededixurafotex_jenoxukaleb.pdf
    • http://bossofbundles.com/uploads/1/3/0/7/130739247/bomezufir.pdf
    • http://fortlauderdaleroofers.net/uploads/1/3/0/7/130775478/dff83261ebe57.pdf
    • http://geminieyecarecenters.com/uploads/1/3/0/8/130874585/pilewoxuma.pdf
    • http://therootedco.com/uploads/1/3/0/5/130590521/repotom-kimupabinekusu.pdf
    • http://sunflowerpreschoolsebastopol.com/uploads/1/3/0/5/130550775/sobenesogebu-regaje-ruvurabelixo-zaxidos.pdf
    • http://moldingyoungprofessionals.org/uploads/1/3/0/4/130435892/90e7bc2c2.pdf
    • http://mcdanielperformanceproducts.com/uploads/1/3/0/5/130590195/rulizadejo.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_off00008a63.bin
2a67300c051517bc259d6861487f709de49cf695fac57b81fc7d38f923f2e395		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A63 7888 bytes

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