Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e658c42d90f02f8…

MALICIOUS

PDF

73.0 KB Created: 2020-08-13 04:43:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c6df64e95ee329f98042247e581858c4 SHA-1: dd24324f4e148784a6790921131803123dd34925 SHA-256: 7e658c42d90f02f87fae4bf109282dbf56973fe14cfa0d3d2cefdd330a380f6f
194 Risk Score

Malware Insights

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

The PDF file contains multiple heuristics indicating it is a malicious redirector, specifically designed to lure users with a fake 'free download' pretext. It embeds numerous links, many pointing to a redirector service at 'ttraff.ru', which is flagged as malicious. The document body, though heavily obfuscated, contains a reference to the same malicious URL, reinforcing the phishing attempt.

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=the%20purloined%20letter%20lacan%20pdf In PDF document text
    • http://files.isuministries.org/uploads/1/3/2/6/132696274/pimab_nuvolu_sikunowazava.pdfIn PDF document text
    • http://files.roseworksconsulting.com/uploads/1/3/2/6/132681559/pibujifumo.pdfIn PDF document text
    • http://files.sunrise-umc.org/uploads/1/3/2/7/132740949/5597028.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/1/0432/8695/4139/files/entrepreneurship_development_book_by_senthil_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4544/6044/files/kedikoxuguv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5658/5111/files/vosezezinixetifiwaba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/bionic_turtle_frm_study_material.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4305/1937/files/70644200079.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuwuvedalolavotidexetugom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9464/5672/files/sweet_home_alabama_tab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6497/5765/files/fumemedexuxujosamekuwedaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9441/6290/files/nationalist_movement_in_west_africa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8646/3647/files/52060865565.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9619/5737/files/hallelujah_ukulele_tabs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2982/1597/files/statistical_data_collection.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/92389651315.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 7

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_off0000e0be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0BE 5016 bytes
SHA-256: 6fe52ffe8fc2299090640e1967891fd8a086b6f71f90c4875e97b39e8f92e832
font_01_sfnt_off0000f1c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C4 10856 bytes
SHA-256: 7487dd9a2422a736ded82904c63af70e77eb0fd64fac8947cc61ae5802882e87

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