Malicious PDF — malware analysis report

Static analysis result for SHA-256 dec436dd3b066f6e…

MALICIOUS

PDF

81.0 KB Created: 2021-04-17 23:54:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 883e48daa2f7fcf42d62dd0146391e5a SHA-1: b60d2d7273dd412b685ccfb078eaf0062c2b82cb SHA-256: dec436dd3b066f6e419662f97510bc4685fdb57122473c0145af7f1535cc7d7e
66 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, with one specifically pointing to a suspicious domain ('resalured.ru') that is flagged as a potential link farm. The ML classifier strongly indicates maliciousness. While no scripts were explicitly extracted, the presence of many external links suggests an attempt to redirect the user to a malicious site, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://resalured.ru/strik?utm_term=digitech+gsp1101+beta+c63 PDF link annotation
    • https://cdn.sqhk.co/tejilunuf/Sh5jfOY/27405363810.pdfIn PDF document text
    • http://remontlegko.info/how_to_negotiate_a_new_job_contractjpiyk.pdfIn PDF document text
    • https://cdn.sqhk.co/dutararopat/HZjajaG/government_spending_worksheet_p._1.pdfIn PDF document text
    • https://cdn.sqhk.co/lemisobe/gcUtgeH/zepem.pdfIn PDF document text
    • https://cdn.sqhk.co/vuxeneson/ijie9s1/citizen_of_rome_dynasty_ascendant_tips.pdfIn PDF document text
    • http://cartest.pro/888016587598g19b.pdfIn PDF document text
    • http://insuranceautousa.com/how_to_create_a_website_without_codingu43sy.pdfIn PDF document text
    • http://cetakchantek.com/13276235787b2y7l.pdfIn PDF document text
    • https://cdn.sqhk.co/remimidotomi/jhdsTjf/shadow_stickman_fight_for_justice_hack.pdfIn PDF document text
    • https://cdn.sqhk.co/kulobibab/eN6sS2T/vikings_age_of_warlords_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/dijogiper/mUhjwij/85030596083.pdfIn PDF document text
    • http://topfrag.rip/organic_chemistry_tutor_hybridization19d74.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/07185e0b-444a-4d5b-9359-690890972b33/enriques_journey_summary_chapter_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a4d17d6-592a-4d10-8f2a-fa110d91737b/jugotugun.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/muzedudi.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/meri_behna_hai_song_ringtone.pdfIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/9182228992.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/mercedes_e_class_coupe_2017_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/851298ae-2270-4cc7-a7ed-ff8a303d5b38/arris_modem_login_dg860a.pdfIn PDF document text
    • https://s3.amazonaws.com/gurupixabogivaz/robinair_vacuum_pump_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/legipalofi/broiler_production_business_plan_template.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 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f321.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF321 5288 bytes
SHA-256: 1c8c7f37a88cad3c7406ae2cc5420e4ada51b325b27d31cd18867fdb4329458a
font_01_sfnt_off0001052c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1052C 10636 bytes
SHA-256: c9fad685d56ce67db6782d4df2f86850353f24f45470ef0176a237e180d66b9c
font_02_sfnt_off00012847.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12847 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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