Malicious PDF — malware analysis report

Static analysis result for SHA-256 84396b8000f45bb4…

MALICIOUS

PDF

34.6 KB Created: 2020-08-13 04:42:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c24987d7fbc9e6b350480bde84ee6995 SHA-1: 509443b4c9af3335babade85c49ec597c957d005 SHA-256: 84396b8000f45bb4432bd09a883b7fef8cfbe315981a6261cd59ac16c43d3443
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating redirection to known malicious infrastructure. The document body and embedded links suggest a lure for technical tutorials, likely a phishing or scam attempt. The ML classifier strongly supports the malicious verdict.

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.com/pify?keyword=catia+v5+tutorials+mechanism+design+animation+release+19+pdf In PDF document text
    • http://files.afrocamming.com/uploads/1/3/1/4/131438111/fepozoxezopezub.pdfIn PDF document text
    • http://files.goldcoastcreatives.com/uploads/1/3/0/7/130775668/vatilakuwakodelen.pdfIn PDF document text
    • http://files.nmnawgj.com/uploads/1/3/0/7/130775223/6274705.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/1/0454/7893/6728/files/65762024864.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4677/9552/files/piladilemuzep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7520/7322/files/43659658240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2872/5405/files/74653089460.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7595/2030/files/78796374803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8693/0329/files/spasticity_pathophysiology_evaluation_and_management.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9562/1786/files/rosevogitoxukuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0928/5024/files/97616640396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4443/7144/files/george_strait_run_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6521/3079/files/30334863531.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/kexapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7315/8821/files/46287728478.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_off00004799.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4799 5868 bytes
SHA-256: 284215ea6a2646e69be50a6a6619226e0388786e30fc56ef2b0444e6f1b58316
font_01_sfnt_off00005b81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B81 9816 bytes
SHA-256: 9900b351bbdb3e0ccd507929c8723df7e80343326270407e9478bea1ae47cb79

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