Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad2f3a44a5ccad7d…

MALICIOUS

PDF

66.6 KB Created: 2020-06-04 18:22:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-15
MD5: 7f146d9a1e76545e90372e24f82e5896 SHA-1: 600767515ed5cce682588f723b2728f7ff03d1e3 SHA-256: ad2f3a44a5ccad7d86e5ce8ef018a2ffc24c199427ffc92cda8e88d5ee09f004
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of external links, many of which point to other PDF files hosted on unrelated domains. The document body mentions 'Amadeus tutorial pdf', suggesting a lure to attract users to click on these links. The heuristic 'PDF_SEO_LINK_FARM' indicates a deliberate attempt to create a link farm, likely for SEO manipulation or to host malicious content. No scripts were extracted from this sample.

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://suranceamerica.com/uploads/1/3/0/3/130379409/130379409.html#amadeus+tutorial+pdf PDF link annotation
    • http://maughan.law/uploads/1/3/0/7/130776300/a378b00ac4dfe8.pdfIn PDF document text
    • http://corporatv.com.br/uploads/1/3/1/4/131438583/1429888.pdfIn PDF document text
    • http://hennajalauri2019.com/uploads/1/3/0/4/130476539/5018067.pdfIn PDF document text
    • http://nyati-apiaries.com/uploads/1/3/1/4/131407236/2471375.pdfIn PDF document text
    • http://arbexamsupport.com/uploads/1/3/0/2/130271255/e44806ff4344.pdfIn PDF document text
    • http://stepbystepmontessoriacademy.ca/uploads/1/3/0/8/130813643/fatoboropajib.pdfIn PDF document text
    • http://fpvdeathrace.com/uploads/1/3/0/6/130603744/xakogexexokala-mujosuwet-xagoz.pdfIn PDF document text
    • http://super8transferhd.taletta.com/uploads/1/3/0/6/130604767/6246388.pdfIn PDF document text
    • http://angrybirds2retailers.com/uploads/1/3/0/6/130620791/fuwasobinukoxikogaf.pdfIn PDF document text
    • http://pabmx.ca/uploads/1/3/0/3/130313366/xilebofe.pdfIn PDF document text
    • http://csrgracing.maryhigginswebdesign.com/uploads/1/3/0/7/130738725/bovijo.pdfIn PDF document text
    • http://33c7u.bpmtc.com/uploads/1/3/0/2/130291971/195966.pdfIn PDF document text
    • http://cpanel.flynndistribution.com/uploads/1/3/0/7/130739256/kibudumoni-riguve-lapev-doladodonuzote.pdfIn PDF document text
    • http://suranceamerica.com/uploads/1/3/0/3/130379409/terms.htmlIn PDF document text
    • http://suranceamerica.com/uploads/1/3/0/3/130379409/dmca.htmlIn PDF document text
    • http://suranceamerica.com/uploads/1/3/0/3/130379409/policy.htmlIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://buluzoti.files.wordpress.com/2020/06/simuwabulinubitosut.pdfIn PDF document text
    • https://nadomanope.files.wordpress.com/2020/06/19561015892.pdfIn PDF document text
    • https://molozujepaxu.files.wordpress.com/2020/06/55765257551.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
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 3

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_off0000d781.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD781 11408 bytes
SHA-256: d589889031da96dc08db2d2178579b7eb00091f38f52dec5f3fab2d8d87f6f05

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