Malicious PDF — malware analysis report

Static analysis result for SHA-256 8346e72793eb7acf…

MALICIOUS

PDF

51.5 KB Created: 2020-08-18 14:31:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e3b19d5ebac428166088dff571b98d3b SHA-1: 43852ddbb8078f786c951cb57dc37d6267ef8a44 SHA-256: 8346e72793eb7acfd0b6f92da52d29369f7fcc184d5a2d2e89a89441b679001e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text suggesting a lure related to 'Alexander Pushkin poems', and a URL pointing to a redirector. This indicates an attempt to direct users to malicious content, 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.com/pify?keyword=alexander+pushkin+poemas+pdf In PDF document text
    • http://files.ninelivestwine.com/uploads/1/3/0/8/130874629/vezik_gunefitotokek.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/1/0432/9648/9632/files/adpic_omc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9818/6652/files/dafot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5976/4634/files/dewalt_dw735_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/25781613666.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6251/8182/files/zazefomuvivitemejexileji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2068/9306/files/xavojisifuroruzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0276/4184/files/74982257534.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9937/3214/files/bloody_roar_game_for_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6387/5486/files/41620095767.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4416/5016/files/37798798323.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_off000086cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86CB 5400 bytes
SHA-256: 3ec15b03364f03934fab54464c1f226eedd7a3c19b96f045133c8d7d02086a76
font_01_sfnt_off000098fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98FB 12720 bytes
SHA-256: f11d9181e0b623ac0d15fb5b70616cbc7cc6317245083d71db74f6d67aba7378

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