Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dbda917d2ba32e5…

MALICIOUS

PDF

53.5 KB Created: 2020-08-11 13:28:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 74ba4037e4c2e0424d758d163e797afc SHA-1: 1fdb64b9fa06373cc8b4f3fe35e81cd0f0d62fd4 SHA-256: 6dbda917d2ba32e54791ff21be53dee2e1c48687e70f1b36168318f47bdffcc1
194 Risk Score

Malware Insights

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

The PDF document contains a link farm designed to appear as legitimate content, but it redirects to a malicious URL. The primary malicious URL identified is https://ttraff.ru/pify?keyword=biography+of+malayalam+writers+pdf, which is flagged as a known malicious redirector. The document's structure and embedded links suggest a phishing or scam attempt to lure users 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=biography+of+malayalam+writers+pdf In PDF document text
    • http://files.justuschildrenbooks.com/uploads/1/3/0/7/130740477/709d4.pdfIn PDF document text
    • http://files.nicoleruysschaert.com/uploads/1/3/1/3/131380107/e9523.pdfIn PDF document text
    • http://dodir.empoweredgirlssoccer.com/uploads/1/3/0/7/130775868/8947692.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/1/0439/4418/1928/files/17968424950.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9343/0177/files/nationwide_isa_transfer_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2655/4781/files/hernia_hiatal_deslizante.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2536/7193/files/allianz_arena_plan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8719/0430/files/58630473541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1520/9123/files/55062514853.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0154/3831/files/defepolomelalosimupare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1206/3391/files/adjectives_worksheets_for_class_4_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/medade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5657/0266/files/34103593247.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5664/3739/files/88779777640.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 4

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_off00008d75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D75 5700 bytes
SHA-256: 15c3f95e771bc557478b1fe25529a5607d7cadd06988af9f6754be6d92e7ab1d
font_01_sfnt_off0000a0c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0C6 12984 bytes
SHA-256: 2866598cb2b84912d0e0b0ccc2c90bbbbdc1f943347bfd814fadce7f6999834f

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