Malicious PDF — malware analysis report

Static analysis result for SHA-256 3428f971d896d30f…

MALICIOUS

PDF

40.4 KB Created: 2020-08-20 21:44:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6ca59a48a00e6a37c678ea1a8c4dc356 SHA-1: 225a4459766cc02615c6d4cb05555bc2a4948314 SHA-256: 3428f971d896d30f6c21efcf5a92bddcf6e0a664f0fa0e629e10fec5e92f68d1
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that matches the redirector identified by heuristics. This suggests the PDF is designed to redirect users to malicious sites, likely for phishing or malware distribution.

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=kiss+animalize+live In PDF document text
    • http://files.lrvedo.com/uploads/1/3/1/4/131452903/xevot.pdfIn PDF document text
    • http://vibuga.dovetailmt.com/uploads/1/3/1/8/131856554/nizun-kukiperakuf-zedibilimaxe-nowebex.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/1/0432/4065/2960/files/lomazebotalokilepekenega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4809/2323/files/992374170.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0924/4316/files/11796688013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8180/9566/files/11909684184.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3151/7605/files/67541071830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/7309/8143/files/chakravyuha_old_kannada_movie_songs_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1783/7472/files/celestine_donkor_ft_nhyiraba_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3134/7868/files/learning_styles_activity.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8356/3162/files/18362745972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9979/1265/files/73220901076.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2182/0313/files/ecological_succession_notes.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 1

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_off00005db1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB1 4816 bytes
SHA-256: 9180d9bd08ef6972a5fdd1f4b072ace5140220dd34c4714dc5439d1c4e546dcf
font_01_sfnt_off00006e0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E0F 12240 bytes
SHA-256: a9eb32dc0ae3084978625e9eda34b4b1623c4211eabffb6d09c2f3e48a14b3fb

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