Malicious PDF — malware analysis report

Static analysis result for SHA-256 8346dbead0af4ee2…

MALICIOUS

PDF

45.4 KB Created: 2020-08-22 20:08:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c6e1ba52f1162fa189a8788ac2b0e7d2 SHA-1: 23e2b6bd3e65c721c2fb65752301081d39c70887 SHA-256: 8346dbead0af4ee27690736865c0ececa8b6fe0e49a0cac0dad5b6eecd91637a
194 Risk Score

Malware Insights

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

The PDF contains embedded links, with one prominently featuring a redirector URL associated with malicious activity. The document body, though heavily obfuscated, contains text that appears to be a lure related to an offer and includes the same redirector URL. The presence of multiple PDF links and a critical heuristic firing for malicious redirector links strongly suggests a phishing or malware distribution attempt.

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=absage+angebot+positiv+formulieren In PDF document text
    • http://zegadejot.nathannasbymusic.com/uploads/1/3/0/9/130969408/30359062b.pdfIn PDF document text
    • http://files.deadmandiscs.com/uploads/1/3/1/6/131606261/6900bf8e.pdfIn PDF document text
    • http://files.divingtokyo.com/uploads/1/3/2/6/132681080/butixopiperad.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/1/0433/3859/6511/files/tuzijajobunurif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/98563510203.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7567/9896/files/decimal_place_value_through_thousandths_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2108/9444/files/fofarov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3910/4917/files/86925073873.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/2269/9943/files/muxuwogog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/7096/4131/files/congruent_triangles_snowflake_activity_answer_sheet.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 2

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_off0000726a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x726A 5412 bytes
SHA-256: 9f672d6c53494ce026c55c68199cb7f8e635cc6d837b49953dd345dc2f245480
font_01_sfnt_off000084bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84BD 11060 bytes
SHA-256: fe2015bc94fc27ebceea1a647a7ae6a3e9f4eb100d21cf7227ee1d7e501a2b82

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