Malicious PDF — malware analysis report

Static analysis result for SHA-256 1298a7caa446fb8f…

MALICIOUS

PDF

72.2 KB Created: 2020-08-14 08:46:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cf88f3a3a940a249b0edf072445634e4 SHA-1: 83aa6844ad5777171f86cf182740790fb838a0ac SHA-256: 1298a7caa446fb8f6fb760cd33c245b2b0016e3d07f7618da5eda3ed95177e6f
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The document body, though heavily obfuscated, contains a URL that matches the redirector. This suggests the PDF is part of a link farm or SEO poisoning campaign designed to drive traffic to malicious sites, likely for phishing or malware delivery.

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=psychologie%20des%20foules%20freud%20pdf In PDF document text
    • http://files.writerial.com/uploads/1/3/0/8/130813054/5716568.pdfIn PDF document text
    • http://files.astleychurch.org/uploads/1/3/0/7/130738484/jupanetaj_nuwarivasofuwa_daveradebapude.pdfIn PDF document text
    • http://files.techniac.com/uploads/1/3/1/8/131871994/d5f38ee7d.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/1/0436/4979/4213/files/kufowenesisina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1062/9532/files/ccna_1_chapter_7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/2622/3001/files/bastien_piano_level_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2800/4507/files/bajavinodanajuxozifulujag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9354/1535/files/mini_14_full_auto_conversion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3260/7900/files/laralofekikisakibage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9660/3814/files/faveposolo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6309/1112/files/mathematical_logic_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7757/3539/files/11265299480.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4294/7751/files/zevawadopekexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5222/6974/files/titijefofoxekupoxad.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 3

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_off0000d9a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9A0 5312 bytes
SHA-256: 599158b3612a9fdc98736f0600b0adab49a9896f5efd5d6e4a7ea6b41c033ffd
font_01_sfnt_off0000eba7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBA7 12516 bytes
SHA-256: 77c15c628e4000a40a5c7f91ea2e0600b13fb51838bac17f0f664ec7516ae77a

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