Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e7e7eb261f0de99…

MALICIOUS

PDF

37.0 KB Created: 2020-08-14 08:20:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 00b9b9b703cb6400c4f7987eb2844b2b SHA-1: 19285c0dc2addfbed4fa9d1ddc19d5125b7dcf69 SHA-256: 6e7e7eb261f0de991acb0d3b0b46808bb57ae096179e8fd864b0e852a7bdd67c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded URLs, with a critical heuristic firing for linking to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains references to URLs that appear to be part of an SEO link farm designed to lure users. The ML classifier strongly indicates maliciousness, supporting the attack pattern of using deceptive content to redirect users to potentially harmful sites.

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/wb?keyword=carpigiani%20191%20bar%20manual In PDF document text
    • http://fizusef.djs-essex.co.uk/uploads/1/3/2/6/132680869/pamirofiletom_wisoz_wobezixoji.pdfIn PDF document text
    • http://files.northwoodsasc.com/uploads/1/3/1/4/131408738/gosezizabuvepiperi.pdfIn PDF document text
    • http://files.alexwilsonpianist.com/uploads/1/3/2/7/132710722/latebep-jawababegiwolob-zasip-safejugo.pdfIn PDF document text
    • http://files.papiotrigroup.com/uploads/1/3/1/4/131437423/vigipuditevise-tawoki-lorovinix.pdfIn PDF document text
    • http://files.maxxseals.com/uploads/1/3/1/4/131409309/1a46ddda.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3170/7294/files/flames_of_war_blood_guts_and_glory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9979/8166/files/11961685404.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6891/5863/files/zodigegesovibizud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1872/2216/files/61512776032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9814/4932/files/xivezozufalamapagite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0239/5813/files/dudibaduxidonof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5161/4359/files/99073547977.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7950/7870/files/88785051600.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7485/4812/files/algebraic_geometry_gathmann.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6690/8065/files/learn_english_grammar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9864/5404/files/xbox_360_games_iso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0670/5311/files/english_placement_test.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004769.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4769 4904 bytes
SHA-256: 5feb53d77d1a765c219a7947896782137481c32e5d899ab282e5fbf4d0376228
font_01_sfnt_off000057ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57EF 9656 bytes
SHA-256: 9c660e463cde1980a98f87e03d22132610eda5a9c58633f87135a7a0fd6bd06e
font_02_sfnt_off000078ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78ED 4324 bytes
SHA-256: 8405bb6ca9a6fb718a2e910e1cdde4d74ac2122cab0061dc5f772322db9c7ccd