Malicious PDF — malware analysis report

Static analysis result for SHA-256 4deaa5a9f0373edf…

MALICIOUS

PDF

45.3 KB Created: 2020-10-08 14:12:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-29
MD5: 1bf3944fcddb8b47960f7f32e6a9c1d5 SHA-1: 6d1bce1582a8d667b1588820769d7964af57c065 SHA-256: 4deaa5a9f0373edfcf9437a7bffa67152cc20e3ea3d708862da7a592c2c6c900
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service identified as malicious. The document body and heuristics indicate a "free download" lure, likely intended to phish for credentials or deliver further malware. The presence of embedded URLs and the ML classifier strongly suggest malicious intent.

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://ggtraff.ru/strik?keyword=rokit+5+rpg2+manual In PDF document text
    • https://site-1038525.mozfiles.com/files/1038525/1149118878.pdfIn PDF document text
    • https://site-1038422.mozfiles.com/files/1038422/tejaruwajumijepakuve.pdfIn PDF document text
    • https://site-1036819.mozfiles.com/files/1036819/gudezefobanobu.pdfIn PDF document text
    • https://site-1036699.mozfiles.com/files/1036699/marenazawuw.pdfIn PDF document text
    • https://site-1038768.mozfiles.com/files/1038768/wugapukub.pdfIn PDF document text
    • http://files.shearserenitysalon.com/uploads/1/3/1/3/131383553/53b9878d6b0f11.pdfIn PDF document text
    • http://files.williecosta.com/uploads/1/3/2/6/132681325/xonur.pdfIn PDF document text
    • http://files.pamschultzgallery.com/uploads/1/3/0/8/130873899/tetojifive.pdfIn PDF document text
    • http://files.womenwhorocknashville.org/uploads/1/3/0/7/130738673/womemow-baxafis-morewonizagugup.pdfIn PDF document text
    • http://fujibuza.vedanza.com/uploads/1/3/2/6/132681422/9289294.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000061c3.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000061c3.bin)
    • https://cdn.shopify.com/s/files/1/0497/8622/4791/files/simple_predicates_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4747/6648/files/bohemian_rhapsody_sheet_music_piano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/1207/4915/files/masako.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/8086/1846/files/unit_1_resources_from_legend_to_history_vocabulary_warm_up_exercises_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5509/5716/files/dvd_changer_streaming.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36f685e0-2b81-47ce-b5da-b34a18885525/semazeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6e29634-f900-4031-9f4a-3c773f08308f/dufil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7885b298-ce59-4b97-9566-8834a9bea1f8/23213170455.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0ce77c3-94c0-4657-931a-eea1abdb3ded/29534067114.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 extracted file (font_00_sfnt_off000061c3.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C3 5288 bytes
SHA-256: ba016c7c44493a62b2dc35bde682b03114994bd2052c8c424dd78be262d721e7
font_01_sfnt_off000073b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73B3 2048 bytes
SHA-256: 54800217e0bdab6a0652dc3c325351488f93f1dbab54dcba8732948bcf8ee3ab
font_02_sfnt_off00007c96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C96 13352 bytes
SHA-256: 5993299e9554f53ef979c61386bc4b4310a5cc395a56195e60b97b648c04f5c5