Malicious PDF — malware analysis report

Static analysis result for SHA-256 322790fbdf14f753…

MALICIOUS

PDF

39.2 KB Created: 2020-03-11 02:12:04 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 9960bbf90cd349a2611fb0bd68d2e832 SHA-1: 201e1c22196da3b73b851d4259e8d71fce065220 SHA-256: 322790fbdf14f75392ae4ca16ee9b5d7ea377834be3a6c893c9b72f6b1745c5d
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs that point to other PDF files hosted on various domains, indicating a link farm or redirection scheme. The ML classifier strongly flagged this PDF as malicious, and the presence of many external links suggests an attempt to manipulate search engine results or distribute further malicious content. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF designed for SEO spam or payload delivery.

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://74-123-78-125.mgwnet.com/uploads/1/3/0/7/130776428/130776428.html#wood+boat+plans+free PDF link annotation
    • http://as13.com/uploads/1/3/0/5/130545698/273830.pdfIn PDF document text
    • http://younique-you.com/uploads/1/3/0/6/130621158/5af580887f.pdfIn PDF document text
    • http://athletesinactionbaseball.com/uploads/1/3/0/5/130588173/694359.pdfIn PDF document text
    • http://nyconcretefloors.com/uploads/1/3/0/8/130815059/2705580b.pdfIn PDF document text
    • http://cannabinoidservices.com/uploads/1/3/0/7/130739098/komowavojawi_zemuzitawag_kivagupirufosat_jikup.pdfIn PDF document text
    • http://trond.com/uploads/1/3/0/7/130740213/lemunitom_pevuwezoze_vukudatej.pdfIn PDF document text
    • http://linknoise.com/uploads/1/3/0/3/130323794/214702.pdfIn PDF document text
    • http://trustwisconsinwomen.org/uploads/1/3/0/2/130287866/dugamegata.pdfIn PDF document text
    • http://phoneserver2012.pinnacleven.com/uploads/1/3/0/6/130621021/12b9ad.pdfIn PDF document text
    • http://community-band.com/uploads/1/3/0/6/130603828/7719d47a55b8e.pdfIn PDF document text
    • http://buytrazodone50mgonline.greatwebsitebuilder.com/uploads/1/3/0/9/130969407/4b9ecfb0f36a8b.pdfIn PDF document text
    • http://thevelvetfarm.com/uploads/1/3/0/4/130478709/zesutotalifuwuj.pdfIn PDF document text
    • http://www.jollielucks.co.nz/uploads/1/3/0/2/130271038/19087659b21a3.pdfIn PDF document text
    • http://lingeriestoresdallas.net/uploads/1/3/0/7/130775866/83856f6b360606.pdfIn PDF document text
    • http://numihomes.com/uploads/1/3/0/6/130603895/29b7b53a77ab8.pdfIn PDF document text
    • http://iworkwithlistingagents.com/uploads/1/3/0/4/130476514/3b27ddf0.pdfIn PDF document text
    • http://silver-linings-speechtherapy.com/uploads/1/3/0/6/130640163/zezena_lamukodajobi_lumewomaxexewix_misenogagavani.pdfIn PDF document text
    • http://agirlfromodisha.com/uploads/1/3/0/5/130540937/3b17d2c6270ff.pdfIn PDF document text
    • http://iamwillhsu.com/uploads/1/3/0/6/130605178/bagitopur.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

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_off0000722e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x722E 7544 bytes
SHA-256: 04154bec53673392ba0732d8c86d410eaca55ff5a66c132a97d9b8794dfef677

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