Malicious PDF — malware analysis report

Static analysis result for SHA-256 75270fcb87c32810…

MALICIOUS

PDF

48.4 KB Created: 2020-08-15 01:40:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: af0349fcaae77886edc0820aa2f587e6 SHA-1: 546f2262303de168174b60a2077079bcf330a84a SHA-256: 75270fcb87c32810114f010b9c0d13eb5a721e37bf8cb8a5a44eb11b5f2e8d29
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to a redirector service identified as malicious. The document body, though heavily obfuscated, contains a URL that is also flagged as a malicious redirector. This indicates a likely phishing or redirection attack, aiming to lead 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=modelo+neoliberal+en+america+latina+pdf In PDF document text
    • http://files.charmayneadams.com/uploads/1/3/2/8/132813998/sebepiwopadip_minonowilesi_fuvub.pdfIn PDF document text
    • http://files.bradleylloydteach.info/uploads/1/3/0/7/130739351/1308313.pdfIn PDF document text
    • http://files.polarcenter-bg.com/uploads/1/3/1/4/131482915/8521ce2b.pdfIn PDF document text
    • http://files.thecwch.org/uploads/1/3/1/8/131856430/mipasaza-rivebaxete-paxuloko-molowukit.pdfIn PDF document text
    • http://niguwujin.joyofchristpress.com/uploads/1/3/1/1/131164211/zudugixideki.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/1/0438/6449/0149/files/dofe_assessors_report_gold.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5759/4016/files/os_atos_institucionais.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4062/8136/files/muzadifadinef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5307/2022/files/suniwidunenisigaxoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8838/0061/files/zizumupolitulujuvepuzunam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7589/5450/files/bat_bioacoustics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3011/7526/files/saturated_steam_pressure_table.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1832/0034/files/sesawax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6426/2818/files/metal_forming_nptel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0600/0282/files/overstreet_comic_book_grading_guide.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_off00007b50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B50 5268 bytes
SHA-256: b4bc74cdbfdb1cdd45a69ffabe1a64537919133d78afb3477085af6e886d8c70
font_01_sfnt_off00008d28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D28 11600 bytes
SHA-256: f3aa4e593f18a82f0559e57f8882be8ffbe80d8ca7cb5969fd33391832b1252a

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