Malicious PDF — malware analysis report

Static analysis result for SHA-256 4817d08517bfc9a3…

MALICIOUS

PDF

56.6 KB Created: 2020-08-12 13:00:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9b7596028237da4952c52a52caeeaf17 SHA-1: ad6231e250aa0aa8efd8e9c575796139ce7fb488 SHA-256: 4817d08517bfc9a3a451c1f700bf3402dd42de70bade8c890bec5ef153b16ddd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many pointing to external PDFs, a common tactic for SEO poisoning and traffic redirection. One critical heuristic identified a link to known malicious redirector infrastructure at https://ttraff.ru/pify?keyword=calcium+oxalate+stone+diet+pdf. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious content.

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=calcium+oxalate+stone+diet+pdf In PDF document text
    • http://senofa.challenge2grow.be/uploads/1/3/1/6/131637016/vadesako.pdfIn PDF document text
    • http://tuforuxa.rersi.com/uploads/1/3/1/4/131406153/3398919.pdfIn PDF document text
    • http://files.artstudiobydesign722.com/uploads/1/3/1/3/131379183/luxoka_sidiwo_toxolajiwi.pdfIn PDF document text
    • http://files.mayflowerimporters.com/uploads/1/3/1/4/131453177/607d74f0136c34.pdfIn PDF document text
    • http://files.elsewherebecca.com/uploads/1/3/1/4/131437864/ff4942f1a1c613.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/1/0435/6859/5112/files/vegevuzojok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6713/6413/files/buwuvepafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1462/7234/files/ldc_ans_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/jopiselifirabolin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6036/2392/files/43432608865.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/understanding_and_using_english_grammar_betty.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8558/4797/files/molozilejubezibufala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7351/9269/files/tigegejidefirisupezaximag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4673/1930/files/rilonubutosakezivana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5895/3369/files/17530375881.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5195/8947/files/likagisagujezobagulegivuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7053/6345/files/kupunitugopunufila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7480/5148/files/51197254624.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_off00009f9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F9E 5180 bytes
SHA-256: ecc0b4381b76e3cdad729ed976bc16e0cb72fe2e0445d415f3777b1f5232c45b
font_01_sfnt_off0000b132.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB132 10724 bytes
SHA-256: 422cc6cc613ba4bd8de2559fcc7e3a08aff9fa8ba7ac0eb3983da694869d8f49

Open this report in the interactive analyzer, or submit your own file for analysis.