Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5f1f372802473aa…

MALICIOUS

PDF

41.0 KB Created: 2020-05-14 06:19:48 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: d2e8718b8ce345b2f9fc4b864b9157e6 SHA-1: 31cf4569999cb383bb62a5203af04e32764a8653 SHA-256: a5f1f372802473aa93c1694074fc474158e72437ad2ae7eddfa7a1299b149ebf
94 Risk Score

Malware Insights

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

The PDF contains a large number of external links to other PDF files hosted across various domains. This behavior is indicative of a link farm or SEO spamming technique, potentially used to distribute malicious content or manipulate search engine results. The ML classifier strongly supports the malicious verdict.

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://deltabravoconsulting.com/uploads/1/3/0/7/130739559/130739559.html#conceit+in+metaphysical+poetry+pdf
    • http://extddivingcenter.com/uploads/1/3/0/2/130289433/4d9cadb7f0aa.pdf
    • http://latepelailee.net/uploads/1/3/1/4/131407158/8945322.pdf
    • http://trenam.net/uploads/1/3/0/5/130589037/bilevaludivinaduf.pdf
    • http://wewillservethelord.org/uploads/1/3/0/2/130270847/dibefiz.pdf
    • http://acnescardoctor.com/uploads/1/3/0/4/130488445/nizurajara.pdf
    • http://thelondonlashcompany.com/uploads/1/3/1/4/131453465/6b231a4a106d0.pdf
    • http://cruzarlacaradelaluna.com/uploads/1/3/1/4/131437815/xanuletor.pdf
    • http://samsconsultingservices.net/uploads/1/3/1/4/131406478/wuxavuropalo.pdf
    • http://the-weebly-inc.net/uploads/1/3/0/5/130542831/jitegu.pdf
    • http://humanspiritvoices.com/uploads/1/3/1/0/131069843/xeviwuduzu-wudizi-bidideraxupis.pdf
    • http://solar-century.com/uploads/1/3/0/6/130604958/taloniborif.pdf
    • http://trayeegroupptyltd.com/uploads/1/3/0/4/130436285/04592f30.pdf
    • http://topfaceboook.com/uploads/1/3/0/3/130323318/xogireze_dizawakexadaris_mubagunopi_kilidekoxomi.pdf
    • http://translationservicecenterllc.com/uploads/1/3/1/8/131856109/ee09b7ff49c729.pdf
    • http://meloveyoulooooongtime.com/uploads/1/3/0/5/130589385/6211347.pdf
    • http://manitobalyme.com/uploads/1/3/1/4/131453197/fbcee2a.pdf
    • http://oceankeye.com/uploads/1/3/1/0/131071114/javubivarodosasovebo.pdf
    • http://arescompany.net/uploads/1/3/1/4/131407012/fejevije.pdf
    • http://go-vegan.org/uploads/1/3/1/8/131856072/jezanenemuxi.pdf
    • http://99high.com/uploads/1/3/0/6/130604495/ea06352d3f2584.pdf
    • http://corvallisbabywearers.org/uploads/1/3/1/4/131406283/jorib.pdf
    • http://marketingofcourse.com/uploads/1/3/0/8/130874339/8789347.pdf
    • http://pulleyautoparts.co/uploads/1/3/0/6/130621663/2939516.pdf
    • http://pilotlightatl.com/uploads/1/3/1/4/131406934/f59e2ada9.pdf
    • http://karenderrickdavis.com/uploads/1/3/1/0/131070497/kefamogapudifur.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_off0000773e.bin
0ad915b5bf5ce390ca2a544f33db842c4bf66f5ea090abd0b73486655c1a0bff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x773E 9820 bytes

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