Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6a77a13ce2c3c64…

MALICIOUS

PDF

41.7 KB Created: 2020-08-26 07:33:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6962f4ec83371a1e50f0222a4cee209e SHA-1: 4cae4d9acc6d4cebfa5b676a41ef58496e818de3 SHA-256: b6a77a13ce2c3c64c26e8d8a670a5b247e06198655a67a8b048e6b2b7cde6b6e
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.ru. The document body, though heavily obfuscated, contains text related to watching a movie and includes the same malicious URL. The file also exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The primary malicious URL is likely used to redirect users to a phishing or malware distribution site.

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=watch+stephen+king%2527s+rose+red+movie In PDF document text
    • http://kikub.karenlabeau.com/uploads/1/3/1/0/131070197/risajigotati_monowizi.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/1/0438/3332/7776/files/resarepada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4638/7367/files/walking_in_the_anointing_of_the_holy_spirit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9635/8565/files/interpreting_graphs_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5149/8142/files/weather_report_new_braunfels_texas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3486/1987/files/gesozogolewitoluroxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8233/3856/files/80163534187.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8091/4846/files/jedobutikoroxabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6694/9786/files/manual_de_auditoria_financiera_peru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3142/8248/files/alphabet_letter_tracing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3633/4501/files/tuzekusaxedusanut.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_off000064ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64AB 5628 bytes
SHA-256: f78128920cd4fb5bc9995085af61295571f10c3855f7f7fca0d3993e1a5ff180
font_01_sfnt_off000077aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77AA 10200 bytes
SHA-256: cdd2a824f3635f2cdf60b45052b85e80f87d6132ed85c68636b069c3e1d97055

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