Malicious PDF — malware analysis report

Static analysis result for SHA-256 11d971e7ec02a6b9…

MALICIOUS

PDF

49.8 KB Created: 2020-08-09 16:53:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ab59f5f8eb898f067b307b2bf175480f SHA-1: ff6235ad7c27b26659dce8649d131be01453d620 SHA-256: 11d971e7ec02a6b9d7dabeb33ac6de3ab4a483fc22a033be6d80a44292f34f69
194 Risk Score

Malware Insights

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

The PDF contains a link farm and redirects to a malicious URL, suggesting a phishing or scam attempt. The embedded URL `https://ttraff.ru/pify?keyword=angular+6+tutorial+tutorialspoint+pdf` is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to URLs that are part of this link farm, indicating an attempt to drive traffic to malicious infrastructure.

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=angular+6+tutorial+tutorialspoint+pdf In PDF document text
    • http://files.gorhamperformance.com/uploads/1/3/0/7/130740200/6256665.pdfIn PDF document text
    • http://files.williamsburgrec.com/uploads/1/3/1/4/131437669/412f004.pdfIn PDF document text
    • http://files.militarypoisons.org/uploads/1/3/0/7/130738700/ff23ec8.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/1/0439/4365/7627/files/genewokugazofojedij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6088/7705/files/kozedavirogikubelop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2794/6904/files/niregusarejoberodunora.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5503/0170/files/medical_report_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1652/6752/files/neumonia_en_nios_tratamiento.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7005/4805/files/94266226591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2341/8019/files/vegese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8945/9368/files/currency_trading_for_dummies_1st_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8205/5833/files/class_12_chemistry_important_notes_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4022/6984/files/gusewezukatuwufelagaf.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 5

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_off0000849d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x849D 5352 bytes
SHA-256: cdf2478c69843207c7eaf3306fb74aa2447e0191b98b5185656be0d39fb429b5
font_01_sfnt_off000096e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96E6 10452 bytes
SHA-256: 2e2643dab67a28575e4bc16049198e5ee6b567a0ab3f6d94419dbfd472ef8359

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