Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9c494e118995bdd…

MALICIOUS

PDF

69.1 KB Created: 2020-10-04 13:59:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 4cb8dfe1cbbd08df6e7a3db17676ab6b SHA-1: a963306d4ab6710512d18e421e36f9db4b0ebf83 SHA-256: f9c494e118995bdddd78b9df56d325dbde0045d8fd3c445cd7f98697714b35d4
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=a+w+tozer+attributes+of+god+pdf In PDF document text
    • http://files.faithseed.net/uploads/1/3/0/9/130969475/pixuxurumibisa.pdfIn PDF document text
    • http://files.mycgateam.com/uploads/1/3/0/7/130739678/7158041.pdfIn PDF document text
    • http://files.praxisreno.com/uploads/1/3/1/3/131379716/7128235.pdfIn PDF document text
    • http://files.duttonsgas.com/uploads/1/3/0/9/130969580/1f4a234610.pdfIn PDF document text
    • http://files.alexbaileydillon.com/uploads/1/3/1/1/131164574/3833b.pdfIn PDF document text
    • http://files.leewen.republicofdaydreams.com/uploads/1/3/0/7/130738894/wixeku_zasabakaxi_kotinep.pdfIn PDF document text
    • http://files.shannoncothrenphotography.com/uploads/1/3/0/8/130874691/kojomedade-zobiraman-zuxof-gemutuw.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/1/0429/7916/4314/files/96290480788.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/44477286123.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4087/7973/files/2015_volkswagen_cc_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2730/3080/files/43301888876.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6353/2959/files/tuvuzikosojepo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4885eab-4260-44b4-8923-2f88813a22de/ruvezebotamasosixejezarug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cef352d2-d7a8-4f09-9d8d-21f212c85d7f/jumifafutulu.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 6

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_off0000cf99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF99 5448 bytes
SHA-256: bddc29f1d7673f898ba13eb8813211716c5eec1e2083b689fc9eea8ac1d735ae
font_01_sfnt_off0000e248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE248 11008 bytes
SHA-256: 6a563d6b9d0849c109940066dc7773832ee12a724b728e5c31fcca765dd7c6c9

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