Malicious PDF — malware analysis report

Static analysis result for SHA-256 817a0eee748d869f…

MALICIOUS

PDF

41.0 KB Created: 2020-08-06 11:56:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 444ce218ba70977d0732e0b44ba3c455 SHA-1: badb4f4c9fcf51c6e6ffe92dde6323e0198b7a49 SHA-256: 817a0eee748d869fb9092712fd9ca6170b6d8d6f5a06e4223545af05f76ed9cf
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to redirector infrastructure like 'ttraff.ru', indicating a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=burglar+bill+book+pdf', suggesting a lure for users to click on a link that likely leads to further malicious content or exploitation.

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=burglar+bill+book+pdf In PDF document text
    • http://files.foodforthoughtandprofit.com/uploads/1/3/1/4/131452959/javipejodek_fofexo_muruwajegi_roparufivoxab.pdfIn PDF document text
    • http://files.buttecollegebcea.org/uploads/1/3/0/7/130775607/fumisot_zawezuliladiwek.pdfIn PDF document text
    • http://files.andrewscole.com/uploads/1/3/1/6/131606198/piwoxaputo.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/1/0435/8320/9631/files/zexatal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3794/0133/files/16503759974.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1060/4705/files/azotemia_renal_adalah.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9417/8982/files/rimagelison.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4259/3189/files/siyavula_grade_11_physical_science_textbook_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3865/2069/files/luwuvavamamefilelete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6759/5165/files/descargar_libro_aura_gris.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5921/6537/files/7006521621.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2742/9533/files/scepticisme_philosophie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9501/4056/files/plasenta_letak_rendah_adalah.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5258/1542/files/styled_components_hover.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 8

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_off00006226.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6226 5284 bytes
SHA-256: 7b4f6bd6038188587dab7362cabe38e89a0c206b536a88345ea9e57794b497be
font_01_sfnt_off00007431.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7431 10332 bytes
SHA-256: 8fe97d53934c3c1d01a660f2e08d77c529b67629027c5af6380bf82be8aca296

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