Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd1d4471fed138f1…

MALICIOUS

PDF

43.0 KB Created: 2020-08-19 06:23:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6d3bfa9f988b35ab73234ad3a3becdf5 SHA-1: e01b1dae57ccab07f28b20fb7e9aacd244353cb8 SHA-256: dd1d4471fed138f1bec9c84f17f48a759c944a510aae5510de604e1317c5e9f8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources. One critical heuristic identified a link to known malicious redirector infrastructure (https://ttraff.ru/pify?keyword=crafting+guide+gw2+weaponsmith), suggesting a malicious intent to lure users to harmful sites. The document body contains garbled text and embedded URLs, further supporting the link farm attack pattern.

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=crafting+guide+gw2+weaponsmith In PDF document text
    • http://files.danielshrigley.com/uploads/1/3/2/7/132740464/kifotuwurifekapigod.pdfIn PDF document text
    • http://files.nuslobbu.com/uploads/1/3/2/6/132680986/5213677.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/1/0431/8350/5570/files/37508569314.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9682/6261/files/black_demon_slayer_task.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/9416/3863/files/transunion_credit_report_for_landlords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/5791/6577/files/dapavifinibur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/7779/1897/files/spanish_numbers_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/2383/7856/files/school_vocabulary_flashcards.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3067/4597/files/pabazetapapabuwelobowukiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1666/7814/files/bezaka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5183/5801/files/writing_equations_of_parallel_lines_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0668/1497/files/gadezilufikosabodedim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8014/7359/files/rads_error_lol_windows_10.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 2

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_off00006be3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE3 5552 bytes
SHA-256: bf57aaa4ee501f0462938b25787fe65ec2118de476c01c7b2c49d31004532ebe
font_01_sfnt_off00007ea8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA8 9564 bytes
SHA-256: 08fadc7fbaae2e6cc2d63b55d0b060adf8f4cdfdaceb1ca28f78dfc4b77fe9a1

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