Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff1b65a4d689e070…

MALICIOUS

PDF

41.7 KB Created: 2020-05-20 10:30:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d688774cf990eadb44ed1f5e23332422 SHA-1: 13f22afcdc9cdf9e78a6f325d5a995436a61e569 SHA-256: ff1b65a4d689e070dc53dd7299b7c9c2b77b0a81568746dcbd67343878026204
94 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious with high confidence. The document body contains text related to 'Sap bpc reporting pdf', suggesting a potential lure for users interested in that topic. The primary attack pattern involves redirecting users to numerous external websites, likely for SEO spam or to host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://gtwservices.net/uploads/1/3/0/3/130379431/130379431.html#sap+bpc+reporting+pdf
    • http://eat-r.com/uploads/1/3/1/3/131379830/8493441.pdf
    • http://somasoakcanada.com/uploads/1/3/0/5/130588363/6553688.pdf
    • http://roofercairns.com/uploads/1/3/0/6/130605069/fogoxufajid.pdf
    • http://pmacanhelp.com/uploads/1/3/1/3/131380619/nefanudoxit_fogexerig.pdf
    • http://treatmentlife.org/uploads/1/3/0/7/130775797/2c0350.pdf
    • http://savvycentralwa.com/uploads/1/3/1/4/131406114/7050118.pdf
    • http://meneerverschuren.nl/uploads/1/3/1/6/131606345/gufuvozezezefa.pdf
    • http://abhisnacks.com/uploads/1/3/0/6/130639254/4988445.pdf
    • http://voetlichtpedicure.nl/uploads/1/3/1/4/131437029/beradajivibuvom-kobawevimager-wokunovemorolin-zakatelolowufaz.pdf
    • http://acavengers.com/uploads/1/3/0/5/130551401/ziragepu.pdf
    • http://skfinancieel.nl/uploads/1/3/0/5/130545742/4640109.pdf
    • http://gefahrentsafter.com/uploads/1/3/1/3/131382257/4553607.pdf
    • http://laurieconger.com/uploads/1/3/0/5/130540009/dizizisibini_vetobepipebup_zafedariduz.pdf
    • http://fullquiverfarmstexas.com/uploads/1/3/0/5/130540789/2280651.pdf
    • http://abbottmobileandsteamcleaning.com/uploads/1/3/1/3/131383914/ketukegimi.pdf
    • http://skiautollc.com/uploads/1/3/1/4/131407179/9910511.pdf
    • http://inglenook-books.com/uploads/1/3/0/6/130604101/1075212.pdf
    • http://foodfortech.com/uploads/1/3/0/4/130489157/4959528.pdf
    • http://northburmachristianmision.org/uploads/1/3/1/0/131071277/fizaposo.pdf
    • http://cscle.com/uploads/1/3/0/4/130476104/jidujakalitopelex.pdf
    • http://holcombconsultingandengineering.com/uploads/1/3/1/4/131453456/wabamela.pdf
    • http://krishnareddy.de/uploads/1/3/0/5/130588809/c9ea53236351.pdf
    • http://champironworks.com/uploads/1/3/1/6/131606789/kodudakewivom_bipabovagoweb_fusejapuwu.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_off0000785a.bin
3cf6ceb5fc933ded8559e1c704cd209dc25b6c92d2bd88edc8e9b963b2fcb9be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x785A 10116 bytes

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