Malicious PDF — malware analysis report

Static analysis result for SHA-256 20a0733a972b64e7…

MALICIOUS

PDF

46.0 KB Created: 2020-03-10 06:05:30 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 496ef579418c59d49b69939bf3d9e295 SHA-1: 22ec2dd41d2d1b2b2094f285682cfe015e11fd3a SHA-256: 20a0733a972b64e744e501066004b70eecaf1422df52a3938ee1bd1b2c9b0f07
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 pointing to other PDF files hosted on various domains, indicative of a link farm or SEO poisoning attack. The document body contains the phrase 'Abecedario en ingles cancion video', suggesting a lure to attract users searching for children's educational content. The embedded links are likely intended to redirect users to malicious content 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://suhki-portraits.rominastiebenphotography.com/uploads/1/3/0/8/130873954/130873954.html#abecedario+en+ingles+cancion+video PDF link annotation
    • http://shadowbendtest6.com/uploads/1/3/0/5/130545097/d0a88d59bf252a.pdfIn PDF document text
    • http://bodyworkbybarb.com/uploads/1/3/0/4/130436139/903cdc739087.pdfIn PDF document text
    • http://shefitbybritt.com/uploads/1/3/0/6/130604562/7812815.pdfIn PDF document text
    • http://fartlyfe.com/uploads/1/3/0/6/130604238/xebixudaka.pdfIn PDF document text
    • http://labviewstudent.net/uploads/1/3/0/2/130288465/kogagugige.pdfIn PDF document text
    • http://ajourney4all.online/uploads/1/3/0/9/130969000/4983173.pdfIn PDF document text
    • http://myptsdveteran.com/uploads/1/3/0/6/130620521/2249945.pdfIn PDF document text
    • http://myluriyubodyscrubs.com/uploads/1/3/0/6/130639082/juduwomef-muvesiradu-dobudubuxodi.pdfIn PDF document text
    • http://canada.the-winners-circle.com/uploads/1/3/0/2/130289458/loposogatok.pdfIn PDF document text
    • http://www.luctravers.com/uploads/1/3/0/8/130873927/1992626.pdfIn PDF document text
    • http://riterepairservices.com/uploads/1/3/0/5/130541743/koxamawabasedove.pdfIn PDF document text
    • http://adsl-208-190-128-197.atcoflex.com/uploads/1/3/0/6/130620833/9540945.pdfIn PDF document text
    • http://www.coachacha.com/uploads/1/3/0/9/130969945/9564089.pdfIn PDF document text
    • http://silverliningssociety.com/uploads/1/3/0/2/130272330/monakidojab.pdfIn PDF document text
    • http://www.candlexqueen.com/uploads/1/3/0/6/130639309/7388097.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
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006adc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ADC 9204 bytes
SHA-256: 46838e3f2405fa5092cd8de3c9dd85d5f557b338436ff36343148394e9a67f30
font_01_sfnt_off00008c68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C68 2616 bytes
SHA-256: d907c570f1f8f2d62f38d7529dbf77de46ca3a1917ec53aca7a78bae59874b04
font_02_sfnt_off0000959c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x959C 16340 bytes
SHA-256: 451895f61762ee2c92071758aadde1050fcd1a41f8262062c25ecb60f5c137f5

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