Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab5e6d83a43a6233…

MALICIOUS

PDF

36.6 KB Created: 2020-10-03 10:11:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: fc7751335c6591a4c67ff2315728492d SHA-1: b09f860d1b25ff0bc6c39385cffca22319243eab SHA-256: ab5e6d83a43a6233bc352744ca632a0a3cf8feb67c56b3a55d1bb5a94e606125
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/strik?keyword=mi+vida+loca+episode+4+answers In PDF document text
    • http://files.rezinnitelegends.com/uploads/1/3/1/4/131453022/lipofij-tizufi-tikimuzegawifi-bakepuru.pdfIn PDF document text
    • http://bavebup.lakecountyiltransition.com/uploads/1/3/1/4/131438539/9653562.pdfIn PDF document text
    • http://nejajoruk.historiaflorals.com/uploads/1/3/1/6/131606289/2d507e.pdfIn PDF document text
    • http://files.blockeddrains247.com/uploads/1/3/0/7/130739039/jixopigorasi.pdfIn PDF document text
    • http://files.jakesmoviestuff.com/uploads/1/3/1/4/131482832/3636830.pdfIn PDF document text
    • http://lupapevo.millerunitedmethodistchurch.com/uploads/1/3/1/3/131398425/7715750.pdfIn PDF document text
    • http://kofaxaw.lovelashed.com/uploads/1/3/0/7/130776485/9092770.pdfIn PDF document text
    • http://files.legacyoflightthemovie.com/uploads/1/3/2/6/132683014/mijutiperu_xinaxigi_lodoritim_jajawasevowel.pdfIn PDF document text
    • http://vuguweve.fallentree.co.uk/uploads/1/3/0/7/130739616/481caa11980.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/0473/3857/files/philosophy_of_death_stranding.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/8065/1430/files/4697127905.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_off00005060.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5060 5312 bytes
SHA-256: e25433aa35e59c0a212df7cb4736d411552ebafcda301ee5e7f24d156aba358c
font_01_sfnt_off000062a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A8 10288 bytes
SHA-256: 960653b8d3235c39f4cee1781ffd3a0644de9dab9e2b703fb7fa4ca2f9e5a3a1