Malicious PDF — malware analysis report

Static analysis result for SHA-256 788bd2ab52e9b59e…

MALICIOUS

PDF

46.9 KB Created: 2020-08-26 03:48:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e0c37d73425be254cb894f3a512a4995 SHA-1: 1175e54ee3610843f575f26eca897bb8c8deeba9 SHA-256: 788bd2ab52e9b59ef6c155411f4a1313c1a4a65169fc6af2181c6d29a65f6be7
194 Risk Score

Malware Insights

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

This PDF file contains multiple embedded links, with a primary link pointing to a known malicious redirector. The document body, though partially obfuscated, also contains this redirector URL and other benign-looking PDF links, suggesting a link farm or phishing lure. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful 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=ft8+contest+rules In PDF document text
    • http://files.buzzsonofabee.com/uploads/1/3/0/7/130775286/9280620.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/1/0430/0849/1673/files/random_bible_chapter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5595/5613/files/gesejusut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7097/9237/files/nopofa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8000/0422/files/beginner_muscle_building_workout_routine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4424/7451/files/strutture_in_cemento_armato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5144/1562/files/86017473772.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7950/7870/files/635333467.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8830/5575/files/alif_laila_full_episode_hd_video.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_off00007a7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A7D 4732 bytes
SHA-256: 3d43c9769424bfeb141fcf23b88c417781f723ea0abf97142b6bc5d95a24863b
font_01_sfnt_off00008a9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A9F 10796 bytes
SHA-256: 8fd261436b7d3571632c3328a6ea47e3574ffb93189f3a5384c7440296ac58f4

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