Malicious PDF — malware analysis report

Static analysis result for SHA-256 08ed9de6d864d7b7…

MALICIOUS

PDF

41.3 KB Created: 2020-04-03 06:25:24 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7cbaedac75f9e3ed8c06f5fb1e5408ea SHA-1: 697a044a97a19ff7b389a611372c76ac97c60f7f SHA-256: 08ed9de6d864d7b7a63292e32eb229913b893dac5e62e0cf2e458006bdd0237b
96 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also strongly indicated maliciousness. These links likely serve as a link farm for SEO manipulation or to redirect users to malicious sites, 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://caesarsphiladelphia.com/uploads/1/3/0/7/130739318/130739318.html#blackstar+ht-5r+mkii+dimensions
    • http://sweetshotcupcakes1.com/uploads/1/3/0/6/130621790/3896ffc6b1.pdf
    • http://artifactjac.com/uploads/1/3/0/9/130969158/sudisawo_kabagawizav.pdf
    • http://indivisibleberks.net/uploads/1/3/0/4/130483836/dukisivo.pdf
    • http://inneredencounselingservices.com/uploads/1/3/1/0/131070633/6318852.pdf
    • http://thecenterofbeing.org/uploads/1/3/0/8/130814104/rirenofavu_nifatoweweda_kofibir.pdf
    • http://blueline-landau.de/uploads/1/3/1/1/131164136/465366.pdf
    • http://lehmanathleticboosters.com/uploads/1/3/0/3/130313088/lonivemesu.pdf
    • http://sculpchamp.com/uploads/1/3/0/7/130739910/de661f0bb30.pdf
    • http://valgetuvi.ee/uploads/1/3/0/4/130476066/365432.pdf
    • http://derekzhang.net/uploads/1/3/1/0/131069991/5113700.pdf
    • http://heartlandchurchnetwork.net/uploads/1/3/0/5/130551611/megolafogulizuw.pdf
    • http://learn-master-painting.com/uploads/1/3/0/2/130289225/xiriledakovoka-mumuj-lirolikazedax.pdf
    • http://affordableproductshots.com/uploads/1/3/0/8/130874473/molajapupinane.pdf
    • http://heartlandshibas.com/uploads/1/3/1/3/131383583/1081401.pdf
    • http://royaltybyblood.com/uploads/1/3/0/5/130551856/gokezuvadibed-tijono.pdf
    • http://penelopepyper.com/uploads/1/3/1/3/131379041/jamagexuk-bisujujevefuru-gisuvukaxomave-pobomalagewiw.pdf
    • http://myinsanechaoticlife.com/uploads/1/3/0/4/130436494/rulegufa_jizefabisonita_pusenomarolu_nugixizemenev.pdf
    • http://columbiaib.org/uploads/1/3/0/5/130588698/lirizenuda_gufoj_kowasub_nolazixa.pdf
    • http://onlinesmdc.com/uploads/1/3/0/8/130874467/efbb86.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_off000077d3.bin
a3cbe07a7bd02f94bbd4be53a864f393ed94e1b7a926e808badbb7c0c146011b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77D3 8196 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.