Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce6d439ec1ff80d6…

MALICIOUS

PDF

52.7 KB Created: 2020-05-13 23:48:00 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-04
MD5: cf3d26a16adcb56cea983e8650745838 SHA-1: 30b57abf669984a360acd2c5705b7ee2eaad6e92 SHA-256: ce6d439ec1ff80d6eb9eb1e1732f81c98daa0f1fd7e067a2374d826d00b0bcbf
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a PDF link farm. The primary heuristic indicates a mass of external PDF links, suggesting a malicious SEO or content distribution scheme. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the link farm suggest an attempt to redirect users to potentially malicious content, possibly leveraging PDF exploits or phishing pages.

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://northernrailleaders.com/uploads/1/3/0/8/130814407/130814407.html#belz+mayn+shtetele+belz+sheet+music PDF link annotation
    • http://thomasryan.co/uploads/1/3/1/3/131398214/9845297.pdfIn PDF document text
    • http://oseelectricalservices.com/uploads/1/3/0/7/130738755/82de25f2c.pdfIn PDF document text
    • http://novedadesdietradisson.com/uploads/1/3/0/6/130639616/5797312.pdfIn PDF document text
    • http://homehealthmidwestcovenanthome.com/uploads/1/3/0/4/130490053/bamizapinagok.pdfIn PDF document text
    • http://embodimentbykait.com/uploads/1/3/0/3/130323130/bareguwezotabesoxur.pdfIn PDF document text
    • http://knowfallstrainingservices.com/uploads/1/3/0/2/130289749/nakapamojojo.pdfIn PDF document text
    • http://sm-pipe.com/uploads/1/3/1/4/131483356/bobigajiw.pdfIn PDF document text
    • http://agelessphotographs.com/uploads/1/3/0/7/130739376/2896912.pdfIn PDF document text
    • http://stayluvedtransportation.com/uploads/1/3/0/6/130621744/2109297.pdfIn PDF document text
    • http://sugarcubedcc.com/uploads/1/3/0/2/130274343/folizalig.pdfIn PDF document text
    • http://phalanx-performance.com/uploads/1/3/0/7/130776138/piritijelup_fokutuziken.pdfIn PDF document text
    • http://goodlifeacademy.ch/uploads/1/3/1/3/131381521/15b0b409e94cff.pdfIn PDF document text
    • http://ptpifarms.com/uploads/1/3/0/5/130590545/d92730647d76a63.pdfIn PDF document text
    • http://beasthoopsatx.com/uploads/1/3/0/5/130542982/rurubatazodufa.pdfIn PDF document text
    • http://autoup2.com/uploads/1/3/0/4/130483520/pezata.pdfIn PDF document text
    • http://caribbluecharters.com/uploads/1/3/0/7/130776824/dukumuwetabediliwimi.pdfIn PDF document text
    • http://designsbydeszel.com/uploads/1/3/0/5/130551256/votuxavol.pdfIn PDF document text
    • http://jeremygrant.ca/uploads/1/3/0/4/130435667/6f92b5fb.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 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_off00009823.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9823 14480 bytes
SHA-256: f31b11a3d6eeda5239d9c14553ff53c241dc1f30909253a4ed7b82bce5ebfdb8

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