Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b5802aefe50929d…

MALICIOUS

PDF

52.7 KB Created: 2020-08-08 06:42:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a3199b61dc3c0a4b1a601d2e6132a9f9 SHA-1: a2535f5f75591a8e5af5d5ba3420cd53138d80eb SHA-256: 7b5802aefe50929d83a82b50448ebec361e617a8798aff1f3534751e0cd99ea5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links designed to appear as legitimate downloads, but they redirect to malicious infrastructure. Specifically, the link 'https://ttraff.ru/pify?keyword=algoritmos+geneticos+inteligencia+artificial+pdf' is identified as a malicious redirector. The document body also contains this URL, suggesting it is the primary lure. The ML classifier strongly indicates maliciousness.

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.ru/pify?keyword=algoritmos+geneticos+inteligencia+artificial+pdf In PDF document text
    • http://files.northbrightonrecording.co.uk/uploads/1/3/1/0/131070336/bb116fe32.pdfIn PDF document text
    • http://files.schoenfischlab.com/uploads/1/3/0/7/130775071/petusitasaruwe-bozukeb-soserape-dawugega.pdfIn PDF document text
    • http://files.gobrethren.org/uploads/1/3/1/3/131384301/telazufexalamix.pdfIn PDF document text
    • http://files.cuestacollegerodeo.com/uploads/1/3/1/4/131483550/f518ae417.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/1/0439/9779/0366/files/what_is_a_webhook_on_discord.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2897/1681/files/37544605683.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3564/8409/files/fuzajibupaled.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3399/2085/files/buderus_gb142_45.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3331/0870/files/6981489847.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1550/4029/files/tigituliwifoxakevapupijib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/vatanom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0342/8510/files/tixujakozutewesasoxujiwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2518/4421/files/fewogirosisuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3122/2677/files/anime_angry_symbol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2635/7143/files/39535025590.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4909/0200/files/sealed_portion_book_of_mormon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8305/4757/files/karazamisujolosezox.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_off000089d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89D7 5464 bytes
SHA-256: b2e7826fd5cdea0fc02c1b05e69b01242969ff0952761fdba6c52ab2557dd3d8
font_01_sfnt_off00009c5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C5B 12052 bytes
SHA-256: 5e547ffd32f5119fdad672f21a87f2a76a9141abf8a1a6158f5043f00e19f6c5

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