Malicious PDF — malware analysis report

Static analysis result for SHA-256 a714a73fa12680d5…

MALICIOUS

PDF

80.0 KB Created: 2021-03-24 02:31:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 08738878419548908c62ff2549e50613 SHA-1: aecc9056da5ee6bc3ab2da063cab7d6087bbf8a7 SHA-256: a714a73fa12680d55de933fc9e1fab369f885bb9ddb2e9d43d101e52d2b95181
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV detection, indicating malicious intent. It contains numerous embedded URLs pointing to external domains, suggesting a phishing or malware distribution scheme. The PDF structure and embedded content indicate it's likely used as a lure to redirect users to these malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://botokaw.ru/award?keyword=amer+logo+pdf PDF link annotation
    • https://cdn.sqhk.co/veladaxuzeba/iUGhcif/alien_invasion_tv_series_2014.pdfIn PDF document text
    • http://dofujifeluradep.medianewsonline.com/youcat_biblia_gratis.pdfIn PDF document text
    • https://cdn.sqhk.co/mopomotop/igiDCTe/31877985475.pdfIn PDF document text
    • https://cdn.sqhk.co/doparibi/hbIyjeH/basic_english_grammar_betty_azar_workbook.pdfIn PDF document text
    • http://fallofelin.online/jidadazitorubbmsp.pdfIn PDF document text
    • http://lizoguxumugef.mywebcommunity.org/public_speaking_tips_for_students.pdfIn PDF document text
    • http://afracheat9.xyz/parrot_ck3100_update_5.0_download2kijy.pdfIn PDF document text
    • http://xemizawufogutuf.scienceontheweb.net/how_to_clean_mr_coffee_maker_10_cup.pdfIn PDF document text
    • https://cdn.sqhk.co/tuledapozato/b0Fhjdz/38171367223.pdfIn PDF document text
    • http://xofelivigavas.mywebcommunity.org/monster_alphabet_goodman_games.pdfIn PDF document text
    • https://cdn.sqhk.co/kogoruzojif/Ahgzehi/melan.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/46b25845-7f71-40ca-ace9-977d74d4c8d2/understanding_by_design_lesson_plan_math.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9b714ba-80ba-44d8-a4ce-acd18c4198b3/20931489259.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83850aab-7e61-40c2-8608-c59e7cd400f6/tipos_de_sistemas_economicos_actuales.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39a7695c-74ee-4c75-b9ac-7eccf37f7829/how_many_decibels_is_a_ge_nautilus_dishwasher.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c81715c9-36a6-4e8a-a6a0-8f8618fb7657/what_does_p1_mean_on_arctic_king_ac.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dede2df1-8414-4747-a21b-88f33e7350f9/ktm_1190_service_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/698e3da8-8ab7-4881-91aa-492e679ab690/76689604866.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/802f2119-b7f5-44ca-bfa8-c86b210d386e/doviwu.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_off0000ff53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF53 4960 bytes
SHA-256: 3f204f25cbc6c5e99b6e0d964c7cbe4069e14c659dcb19fb75fe94c36c295bb3
font_01_sfnt_off00011024.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11024 10316 bytes
SHA-256: bda8430e29a38335e86f31b83a3ead6bb143f9bacc378a21bf77251adefcbbee

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