Malicious PDF — malware analysis report

Static analysis result for SHA-256 14c77c7f5e7a7bac…

MALICIOUS

PDF

57.2 KB Created: 2020-10-27 06:58:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-07-18
MD5: 371b0a9a7eaafa18bbadc0d3c00e14a7 SHA-1: fc88f6fd1657b403cac8a3a37315157b21141281 SHA-256: 14c77c7f5e7a7bac58b7feb4de82464017daf6c9f9eba8a5f273482a96b494bd
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://ggtraff.ru/strik?keyword=furry+sex+toys In PDF document text
    • https://s3.amazonaws.com/gotijejaj/easy_piano_pop_songs_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/2975016414.pdfIn PDF document text
    • https://s3.amazonaws.com/gujutavevive/varicela_en_nios_sintomas_y_tratamiento.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/milili.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/baby_shower_biblico.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375698/normal_5f96e75d6afb2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380082/normal_5f92d4848837a.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/cape_town_convention_2001.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/lisepuvijodam.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/xemufali.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/search_inside_yourself_chade_meng_tan.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00008c1e.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00008c1e.bin)
    • https://cdn.shopify.com/s/files/1/0493/7210/2822/files/sram_guide_r_organic_brake_pads.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6321/3209/files/cuales_principales_caracteristicas_adolescencia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6740/0601/files/fasibudawogikepuxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9052/3813/files/65375196634.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/4295/8231/files/universal_unroot_apk_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7880/4160/files/advanced_english_dictionary_and_thesaurus_mod_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3524ea3-a9d2-4e17-a4a8-5ee7e93c43db/42959722175.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bff5f66-5641-4d36-abca-2632c3ff0ee0/osmosis_edpuzzle_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c06f7cd2-52cd-409d-b108-f516a1a8c7b6/25087048222.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d574061-074f-4c56-ba6d-95fa33bd1945/55516510066.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b94b6a8-2810-4836-bad8-989d197e9e8b/24309968727.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/6694/5447/files/bidiseberuxajitepapo.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_off00008c1e.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off0000c1a6.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off0000c1a6.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008c1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C1E 4564 bytes
SHA-256: 2309e02c868614435923f46d6eea16c931b810f866297600b4a059dc9cc9357d
font_01_sfnt_off00009bc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BC7 11296 bytes
SHA-256: 1af248dad913ef10c1c29ece2bb986d45d3389e9f0b39cc32b97b3cd42933d97
font_02_sfnt_off0000c1a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1A6 16312 bytes
SHA-256: 028dbaa76d48ae99b02248bacea50134e27ed131f5dd39e25ac401de8961e19b