Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d23af96e2d2ff1a…

MALICIOUS

PDF

47.6 KB Created: 2020-03-17 12:48:45 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 9d069a976c5fc5b17fa1c02d99a95ece SHA-1: e1ce2ad0a461f25606f47198bc73c370598bb1c0 SHA-256: 3d23af96e2d2ff1ab4fe3e9c9a55937558c7ee316862a9b1170cc08ee9309119
96 Risk Score

Malware Insights

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

The PDF file contains a large number of external links to other PDF files hosted on various domains. This behavior is indicative of a link farm or SEO manipulation tactic, potentially used to distribute malicious content or improve search engine rankings for malicious sites. The ML classifier strongly flagged this PDF as malicious, supporting the suspicious nature of the embedded links.

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://juicyscoopobsessed.com/uploads/1/3/0/5/130550750/130550750.html#loser+by+jerry+spinelli+questions PDF link annotation
    • http://metrogovernance.com/uploads/1/3/0/4/130435813/2082471.pdfIn PDF document text
    • http://mail.mayigarabatos.com/uploads/1/3/0/5/130589285/ditibere_lozevajotaxoxob_getameregit.pdfIn PDF document text
    • http://lakesideranchandresortfl.com/uploads/1/3/0/7/130739983/65de45a0b.pdfIn PDF document text
    • http://freespiritleisure.online/uploads/1/3/0/4/130489080/2182068.pdfIn PDF document text
    • http://www.lunasolphotography.com/uploads/1/3/0/6/130620251/pizurifinanowugezoma.pdfIn PDF document text
    • http://jenniferroseoneal.com/uploads/1/3/0/7/130738830/1110775.pdfIn PDF document text
    • http://www.myasianwiki.com/uploads/1/3/0/6/130603925/biruliwapisi.pdfIn PDF document text
    • http://petsdr.net/uploads/1/3/0/6/130639554/mubodiv_tilexi_tufaboxaboxir.pdfIn PDF document text
    • http://janboersmeulaentien.nl/uploads/1/3/0/7/130739648/vikokelujeju.pdfIn PDF document text
    • http://www.mysoiledplants.com/uploads/1/3/0/4/130483983/tozixapivevas-zorogopopiw-zobikawifumiwi-tezomimo.pdfIn PDF document text
    • http://www.rachelhounsinou.com/uploads/1/3/0/6/130604599/vetegaxul.pdfIn PDF document text
    • http://habibimodayelegancia.com/uploads/1/3/0/7/130775634/fivifeluz.pdfIn PDF document text
    • http://webdisk.ratonschools.com/uploads/1/3/0/4/130478882/nasulajikorixogiv.pdfIn PDF document text
    • http://imperialstudentshome.net/uploads/1/3/0/8/130815080/fumafasekapipatuz.pdfIn PDF document text
    • http://pagostotal.com/uploads/1/3/0/2/130289461/nurupif_waxolowokibo_wesusit.pdfIn PDF document text
    • http://commongracetherapy.com/uploads/1/3/0/3/130313006/fejenum-saduwurakaju-tewad.pdfIn PDF document text
    • http://dinners.ccsps.info/uploads/1/3/0/6/130605442/gunivebimovu.pdfIn PDF document text
    • http://atlantaasta.voyagerwebsites.com/uploads/1/3/0/5/130546804/3156481.pdfIn PDF document text
    • http://onsiterepairs.info/uploads/1/3/0/3/130379529/jivotifusapu-riwamig-wanolaludekuk.pdfIn PDF document text
    • http://srdasaulas.com/uploads/1/3/0/4/130483479/doxamawatunalezev.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
🗂 Part of campaign: ccevaluations.com 15 samples

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000928e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x928E 7776 bytes
SHA-256: 11f0ee96268f4ffc50617d9fdbc170ccc97c168042d776df25253979977bdf57

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