Malicious PDF — malware analysis report

Static analysis result for SHA-256 26fcf82d6dd323fc…

MALICIOUS

PDF

35.9 KB Created: 2020-10-09 12:07:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-07-19
MD5: 5134e28f4fa3eadb6d4fc46749b0c7a4 SHA-1: 0dabf0b7ec0abfe82742a6e28b3d9a25e2612a82 SHA-256: 26fcf82d6dd323fc2ae54860de3b4c20bbbe3c7faf4c8601328897c9a37b5dde
194 Risk Score

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://cctraff.ru/strik?keyword=dave+chappelle+tickets+wirrig+pavilion In PDF document text
    • http://files.hop2osoda.com/uploads/1/3/0/9/130969593/7682119.pdfIn PDF document text
    • http://files.andreabidwell.com/uploads/1/3/1/6/131637077/fagonuxegovok.pdfIn PDF document text
    • http://vaworira.diaryofadesitck.com/uploads/1/3/0/8/130814004/9050882.pdfIn PDF document text
    • http://mojabuz.landscapegardenerscamberley.co.uk/uploads/1/3/1/4/131483245/lebajojom.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00004def.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00004def.bin)
    • https://cdn.shopify.com/s/files/1/0481/0653/7111/files/totir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/5440/2202/files/38250900936.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1040/9126/files/lord_of_the_flies_pig_head.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/0037/5707/files/the_ultimate_gift_12_gifts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7353/5142/files/good_morning_song_lyrics_for_adults.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/7937/3478/files/bauer_nexus_1n_shoulder_pads.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7650/9080/files/wugin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9477/7757/files/coffee_tea_or_me_meme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1643/8438/files/73181179730.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/8330/8442/files/best_buy_victoria_secret_gift_card.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6480/0918/files/kent_state_final_exam_schedule.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 extracted file (font_00_sfnt_off00004def.bin)

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_off00004def.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DEF 5408 bytes
SHA-256: a5eae1fe03a01edc2fa99086eefdb65f4a43983b3c0d3ca4d6f00e7e7eb87b1c
font_01_sfnt_off00006071.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6071 10084 bytes
SHA-256: d19537bf88ca21dff8e670358e76ead4e55614d54b7f7f6d39352bc59a371f1a

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