Malicious PDF — malware analysis report

Static analysis result for SHA-256 847b516b2480ee41…

MALICIOUS

PDF

54.7 KB Created: 2020-10-28 16:38:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-06
MD5: 900b73e471c05c130691cdc48cfdb9bb SHA-1: 602596fe451c2d926dab314be393659a39a8d000 SHA-256: 847b516b2480ee412278f83e952ea75466d6a727782be0c50a8b282ac2b85553
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://gettraff.ru/wb?keyword=inclusive%20development%20meaning%20pdf In PDF document text
    • https://s3.amazonaws.com/dovulavavo/concept_of_social_movements_in_the_philippines.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371272/normal_5f8f62607a470.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/biology_book_grade_10_to_12.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/bhagavad_gita_with_hindi_translation_download.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/tugepejopugatiposanukafa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407749/normal_5f97452917ecc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386076/normal_5f8d43cdc6dfe.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000945f.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000945f.bin)
    • https://uploads.strikinglycdn.com/files/eb636722-10d2-4a4d-b2da-c107ff65b8d6/beyhadh_background_music_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3219/0876/files/blank_nutrition_label.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64ec2c60-786e-46b9-b49d-d613cd8b398b/54665109439.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7601eb70-fc3e-458b-a0b4-3c15e0bf8f7e/arbonne_weight_loss_results.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b656bd2-5f91-4e55-bf6d-527cad2bf25f/patologia_robbins_10_edicion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9929/4363/files/wuvakikav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8304/5293/files/xunileji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7065/1542/files/generation_gap_issues_in_the_workplace.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/3882/4377/files/game_rhythm_android_bisa_offline.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/0436/1366/files/sobudiketozubufogoxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2628/4181/files/jepemoxujilerutinoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/5272/8230/files/conduita_in_urgente_medico-chirurgicale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/6675/9612/files/reading_comprehension_multiple_choice_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7279/7857/files/jixapevegekob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72c2342c-9e3a-47d9-a90f-993453411b0a/ksp_mobile_processing_lab_infinite_science.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0863/8632/files/lowul.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_off0000945f.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000945f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x945F 5376 bytes
SHA-256: 26b397447a8972e59da4a84915db069852077e35b5e29e67b9df04e4e956ec95
font_01_sfnt_off0000a6a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6A7 11376 bytes
SHA-256: 3eba178a3d1d9cd668a140ee54b8e76ef6f6c16d733e213bd8bcfcb2a9b84d1a