Malicious PDF — malware analysis report

Static analysis result for SHA-256 aff59c2b801b6151…

MALICIOUS

PDF

41.6 KB Created: 2020-11-07 18:01:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: c8e1993a74e876f5787ed2adc53dc024 SHA-1: 89e24aa581e69acd77fbcd60ad4a449c432cdf22 SHA-256: aff59c2b801b6151190cebf89517acee4bcf99be5cf60f7b7f22bf2474df2494
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. One of the embedded links, 'https://traffnew.ru/123?keyword=procare+support+status', is flagged as potentially malicious. While no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of malicious intent, likely to redirect users to harmful content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 https://traffnew.ru/123?keyword=procare+support+status PDF link annotation
    • https://jimazakogise.weebly.com/uploads/1/3/4/6/134612968/2179325.pdfIn PDF document text
    • https://xirofepomare.weebly.com/uploads/1/3/0/8/130814083/6615089.pdfIn PDF document text
    • https://vogaxuruxav.weebly.com/uploads/1/3/4/3/134352923/zitojinavifuru.pdfIn PDF document text
    • https://nonudefetug.weebly.com/uploads/1/3/4/3/134314303/8775842.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365620/normal_5f8864cb29091.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369524/normal_5f9971a02174b.pdfIn PDF document text
    • https://roderisagewap.weebly.com/uploads/1/3/4/5/134507489/jirugajefifa_kokarubo_rosiwopikepul_rexotobo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://wejogude.files.wordpress.com/2020/11/niwasegini.pdfIn PDF document text
    • https://dobaxululon.files.wordpress.com/2020/11/nevsky_prospekt_gogol.pdfIn PDF document text
    • https://gefonan.files.wordpress.com/2020/11/48781763133.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/active_voice_and_passive_voice_in_english_grammar.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006146.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6146 4896 bytes
SHA-256: 930fbc59e628f16c2b95cd609dd95f577759915a81eb42f5948e02bb951e6214
font_01_sfnt_off000071fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71FC 12356 bytes
SHA-256: f0838ec1a1da3d8c727765956ad42e35e27c0ca73c434f4b790012cee476fd3c

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