Malicious PDF — malware analysis report

Static analysis result for SHA-256 6456dec1d4869736…

MALICIOUS

PDF

44.6 KB Created: 2020-08-16 12:40:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c8fe9187bc0c551afe98bed3d484dbed SHA-1: b94e96dcdb3f569505773d845f2df4d095f273b1 SHA-256: 6456dec1d48697363f72946bc3762dfb2b36d4ab4d24118b7a28632c10dba5d1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external resources, many of which are part of a link farm designed to appear as free downloads. One critical heuristic identified a link to a known malicious redirector, 'https://ttraff.cc/pify?keyword=media+violence+and+aggression+pdf', indicating a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious.

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://ttraff.cc/pify?keyword=media+violence+and+aggression+pdf In PDF document text
    • http://sidogi.pegdownracing.com/uploads/1/3/1/6/131637306/pifunawo_wilixuwuzosawug.pdfIn PDF document text
    • http://wigixe.thespringschurch.net/uploads/1/3/2/6/132682883/3fff1.pdfIn PDF document text
    • http://sakivizu.hookahuniversity.net/uploads/1/3/2/8/132815213/sixufobeluwexo-fuxokusubex-ganosaxoximad.pdfIn PDF document text
    • http://files.testimoniesofwitness.com/uploads/1/3/1/1/131164573/6453491.pdfIn PDF document text
    • http://files.harvardcounselors.com/uploads/1/3/0/9/130969551/6ba820c5b60a.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/1/0437/7339/5101/files/fusukerufuke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1471/5549/files/supreme_court_verdict_on_cauvery_water_dispute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/7719/4148/files/mojang_account_recovery.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/radesojuvusiwisonixe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4094/8892/files/83160448829.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4058/7431/files/41147159731.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1642/1529/files/ncert_class_12_maths_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9775/9643/files/badivom.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 1

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_off0000710c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x710C 5388 bytes
SHA-256: 0be38198730cdeee9e903b9849a0ac1cf6dd5affbb141fa6ff72dd269726e1f1
font_01_sfnt_off0000837e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x837E 10032 bytes
SHA-256: b308e1a762f920d3fb18564070e95a11723492f3728188242e1a63740303a2be

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