Malicious PDF — malware analysis report

Static analysis result for SHA-256 64ddd388f5de351b…

MALICIOUS

PDF

79.2 KB Created: 2021-03-14 15:00:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2ba3345c6ca430ff4d751bd4ef2f2d34 SHA-1: 33c167c986b9df19025892246e6c3f1de68c5862 SHA-256: 64ddd388f5de351b6b93bc959c5433baeed7d8378d4ad73598c6747d9bc4d690
66 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous embedded URLs, many pointing to disposable domains, and is flagged by ML classifiers as malicious. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using link farms on disposable hosting to obscure malicious intent. The presence of external URIs suggests an attempt to redirect the user to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 4

  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://bologen.ru/award?keyword=sa+budget+speech+2020+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4454575/normal_6000febdb0531.pdfIn PDF document text
    • http://begemotiks.space/articulate_storyline_3_trialgm7t7.pdfIn PDF document text
    • http://sdl-trade.com/xapujumazelomifo1awd7.pdfIn PDF document text
    • http://1s.london/100_most_popular_rock_songs_of_all_time39qa6.pdfIn PDF document text
    • http://drive4mclaneaustell.com/twilight_breaking_dawn_part_3_castyzr08.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455670/normal_5ff0e9b881592.pdfIn PDF document text
    • https://gufobetatogeset.weebly.com/uploads/1/3/1/0/131069923/rofezibexun.pdfIn PDF document text
    • http://repair-planshetov.ru/3997569616739rpi.pdfIn PDF document text
    • http://samettemiz.xyz/369476807485aesb.pdfIn PDF document text
    • https://wabelurotetef.weebly.com/uploads/1/3/4/6/134693048/walujalivozi_wafipa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480904/normal_600f3255cee11.pdfIn PDF document text
    • http://theharaka.online/gedakolegorosegalunifesfm.pdfIn PDF document text
    • https://mapokelamoda.weebly.com/uploads/1/3/1/8/131856574/6562821.pdfIn PDF document text
    • http://detonic-ro.website/pelekovutopagor9v9wg.pdfIn PDF document text
    • https://wojozumokibenap.weebly.com/uploads/1/3/4/0/134097994/vuboz.pdfIn PDF document text
    • http://academic-club.ru/sixaborutiwisapejavikub7nx.pdfIn PDF document text
    • http://neojust.ru/98109820580dpt0b.pdfIn PDF document text
    • http://lnstagramverifiedsbadgesforms.com/toro_personal_pace_mower_maintenance6uffq.pdfIn PDF document text
    • https://bexokafosirur.weebly.com/uploads/1/3/2/6/132695536/c820f6c40c99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379605/normal_600f042ed118e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fogibi/is_perth_better_than_sydney.pdfIn PDF document text
    • https://s3.amazonaws.com/suzujewa/guide_du_routard_thailande_khao_lak.pdfIn PDF document text
    • https://s3.amazonaws.com/degagaziv/adblock_apk_root.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/dotage.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/why_is_my_petrol_lawnmower_backfiring.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f661.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF661 5804 bytes
SHA-256: b026870e8180a8141ee48ed99cff2ab03e05d03c6e26a5f9969c3ef4f38175a5
font_01_sfnt_off00010a21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A21 10428 bytes
SHA-256: 472bab5ddfa02bd774e6e1a9b9f7627e7b258241e0ce34b1a56369c8503c2230

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