Malicious PDF — malware analysis report

Static analysis result for SHA-256 85d6d3b4e714a689…

MALICIOUS

PDF

37.3 KB Created: 2020-10-03 21:28:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 9f3d22e3609a48be042022149a68e083 SHA-1: fd024aa4687c549c864dbf9d44a3562a7e5a3708 SHA-256: 85d6d3b4e714a6890e530918787838c2a1747a77823b84559367ca4d71c46899
194 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=georgia+on+my+mind+alto+sax In PDF document text
    • https://site-1037082.mozfiles.com/files/1037082/javavixiregaxiwonefu.pdfIn PDF document text
    • https://site-1037869.mozfiles.com/files/1037869/wururinezevikunapoti.pdfIn PDF document text
    • https://site-1036724.mozfiles.com/files/1036724/donotogimowufafirovum.pdfIn PDF document text
    • https://site-1036824.mozfiles.com/files/1036824/62021338088.pdfIn PDF document text
    • http://files.sunshinecelebrant.net/uploads/1/3/1/6/131637168/a8d19e0ca2a1.pdfIn PDF document text
    • http://files.charleesangelsboutique2.com/uploads/1/3/1/8/131872146/1826504.pdfIn PDF document text
    • http://zigaxux.scsoaventura.com/uploads/1/3/0/9/130968917/c0b28bc8eab.pdfIn PDF document text
    • http://vivemobub.sebarms.com/uploads/1/3/1/4/131406202/gatadewimegifo.pdfIn PDF document text
    • https://site-1037018.mozfiles.com/files/1037018/lejawusigawetumoxasufami.pdfIn PDF document text
    • https://site-1037241.mozfiles.com/files/1037241/nosarugevilukujiv.pdfIn PDF document text
    • https://site-1036680.mozfiles.com/files/1036680/19596965905.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/1/0429/0094/7103/files/25503120634.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5349/9046/files/tukivoxovosapozin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5603/5990/files/intensity_of_sound_waves_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0504/5659/files/73620677974.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000054d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54D0 5344 bytes
SHA-256: 911786eb4c9c6403d97190b0a745b1eb378645a5ca68c8fcdc53e4ac6b113708
font_01_sfnt_off000066f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66F9 9852 bytes
SHA-256: a2243c8232cb9829ef3fe2a5e1c242bbd3c0dc6504750972a193838ef8c75e79

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