Malicious PDF — malware analysis report

Static analysis result for SHA-256 45f09aeee91eb8f5…

MALICIOUS

PDF

43.1 KB Created: 2020-08-04 02:50:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4d4d3ab1c8ab7a763af579ac95e7d373 SHA-1: 08721e86caaeb5564e6addae3b685643a24a369f SHA-256: 45f09aeee91eb8f583ed79600ddaf066f29e7e509b8545cebb32e44df52b1ddd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com'. The document body, though partially corrupted, contains text related to 'finger arthritis exercises pdf' and the tool 'wkhtmltopdf', suggesting a lure. The PDF also contains a large number of external links, many pointing to Shopify domains, which is indicative of a link farm used for SEO poisoning or to obscure the true malicious destination. The primary malicious IOC is the redirector URL.

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=finger+arthritis+exercises+pdf In PDF document text
    • http://files.rahealtyns.com/uploads/1/3/1/4/131437725/06f652fa.pdfIn PDF document text
    • http://files.brain-wiselearning.com/uploads/1/3/1/4/131406600/xazotitepe.pdfIn PDF document text
    • http://files.barbararas.com/uploads/1/3/1/6/131637606/2623508.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/1/0434/1334/0316/files/18302148715.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6812/9431/files/30173755364.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9392/1685/files/arcpy_spatial_join.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7990/1085/files/17592467673.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3603/2680/files/popovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0881/0398/files/99179717074.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7456/5784/files/jukunariguvofufepete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7720/6165/files/simple_java_game.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4420/8797/files/niwazijigaledaxafa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1762/3957/files/liwijilefewovojumusutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8785/4749/files/74534024557.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8456/2086/files/naregobav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4058/7431/files/magirufikilapil.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 3

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_off000068f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68F5 5408 bytes
SHA-256: a2df43680f2ae3938272446fdee0d2152297c7308dc79d6a2b482bdda199aea0
font_01_sfnt_off00007b63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B63 10660 bytes
SHA-256: 5c60e65eb580abb2dc0acdffcf6f6a27bc980d11db868f71a1935f80a08c5f1f

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