Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8b6a6bfcfd6bfed…

MALICIOUS

PDF

49.2 KB Created: 2020-10-03 12:31:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-06
MD5: 0ad0255a6864b4217e4eb3d7df0ecb8d SHA-1: fca65be2445d35a0cb36c07c513200495c1515c4 SHA-256: a8b6a6bfcfd6bfeda87e1e3fc83f64c59d8135b29ac05a8d44bd8fd71c82d17d
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=identifying+sentence+errors+exercises+with+answers+pdf In PDF document text
    • http://devedime.pesfusd.com/uploads/1/3/1/4/131482916/9602127.pdfIn PDF document text
    • http://ponemiji.europeanmasterswl.com/uploads/1/3/1/8/131857204/pinonanuzuvidage.pdfIn PDF document text
    • http://files.calijyl.com/uploads/1/3/1/4/131438176/9c4a623e7b.pdfIn PDF document text
    • http://files.chapeltownfootclinic.co.uk/uploads/1/3/1/3/131379552/vupod_xerafa_wagonibojaxiwoj.pdfIn PDF document text
    • http://files.flcprinceton.org/uploads/1/3/0/8/130874676/wuwobojetut.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000081b3.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000081b3.bin)
    • https://cdn.shopify.com/s/files/1/0482/9030/0068/files/sedaxojinupemevogezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4639/6326/files/46478066304.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/4814/8378/files/81092382249.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7025/9357/files/serial_podcast_worksheet_answers_episode_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8171/2287/files/58288937975.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/4073/0007/files/58168822252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/3297/9867/files/old_troy_bilt_tiller_parts_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4186/5384/files/1346057939.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/0249/6677/files/21659795830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1822/1730/files/path_of_exile_best_class_2020_reddit.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_off000081b3.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_off000081b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81B3 5584 bytes
SHA-256: 170d23f736093e4a3f5a3608d197005ce9b96f894196384d66273533b059a00f
font_01_sfnt_off000094da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94DA 10112 bytes
SHA-256: 37531d339c5fa1a8a00cb07ca861f6b3d6bfde0a762e015f046f0b503cb7ef0e

Open this report in the interactive analyzer, or submit your own file for analysis.