Malicious PDF — malware analysis report

Static analysis result for SHA-256 217d62daba0c4585…

MALICIOUS

PDF

35.9 KB Created: 2020-05-15 22:33:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 0349b11320cbe593ebbe9bc9a652c524 SHA-1: 5fd6cae6eb9cccba917d0ee54c59c92a2f862063 SHA-256: 217d62daba0c45850eec67c01e38e15b12a748b0225dc675e2edb4605599c330
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links to other PDF files hosted across various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external URIs supports this assessment. 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://glazenwanden.net/uploads/1/3/0/5/130590458/130590458.html#answers+bible+curriculum+sample PDF link annotation
    • http://almineleclerc.com/uploads/1/3/0/2/130288753/4ceffa890.pdfIn PDF document text
    • http://meganrobleshair.com/uploads/1/3/1/4/131437676/1465576.pdfIn PDF document text
    • http://iptelsupport.net/uploads/1/3/0/8/130873949/sitoge-bafubus.pdfIn PDF document text
    • http://hardyblue.com/uploads/1/3/1/4/131406621/voxusifisopoz-zoladipapise-jarumivoduk.pdfIn PDF document text
    • http://mulilogases.com/uploads/1/3/0/7/130740429/b1948f2d471.pdfIn PDF document text
    • http://cultofeywear.com/uploads/1/3/0/6/130639034/5380957.pdfIn PDF document text
    • http://notariusznazoliborzu.pl/uploads/1/3/1/3/131381658/bejidebunese-nimibiz.pdfIn PDF document text
    • http://derekacandelore.com/uploads/1/3/1/0/131069898/420aad3.pdfIn PDF document text
    • http://capitalcityfarmersmarket.org/uploads/1/3/1/0/131070226/234136fb28aa.pdfIn PDF document text
    • http://myrustyhorse.com/uploads/1/3/0/6/130621744/vukigiw.pdfIn PDF document text
    • http://2cloud.ru/uploads/1/3/0/7/130739116/sekobifagaf.pdfIn PDF document text
    • http://k9designwarroad.com/uploads/1/3/1/4/131438078/7626546.pdfIn PDF document text
    • http://lecrin-valley.eu/uploads/1/3/0/5/130589010/5106097.pdfIn PDF document text
    • http://trade-city-award.com/uploads/1/3/0/8/130873947/romafur.pdfIn PDF document text
    • http://drivingourfuturetoday.com/uploads/1/3/0/2/130287940/xipidariropet.pdfIn PDF document text
    • http://themovementsmethod.com/uploads/1/3/1/4/131454683/kowodarorev.pdfIn PDF document text
    • http://bookkeepingsolutionsonline.com/uploads/1/3/0/6/130604650/591764.pdfIn PDF document text
    • http://medtechtips.com/uploads/1/3/1/4/131410736/dajukuto.pdfIn PDF document text
    • http://harrisscruggs.com/uploads/1/3/1/4/131483126/fosidovona.pdfIn PDF document text
    • http://taxiairport.online/uploads/1/3/1/4/131483184/pexeposig_nubugisotiw.pdfIn PDF document text
    • http://laurabingham.com/uploads/1/3/0/8/130874470/gogiru.pdfIn PDF document text
    • http://burgerchampsjack.com/uploads/1/3/0/6/130620228/4817080.pdfIn PDF document text
    • http://ironrepublic.shop/uploads/1/3/1/3/131379894/1211692.pdfIn PDF document text
    • http://d-cyfor.com/uploads/1/3/0/7/130776260/4461993.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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 8

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_off00006036.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6036 10376 bytes
SHA-256: 7eab4cb9ced853813829d485c491272349c36d67e0fa769b9c71f1c65352c806

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