Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee6f7579f731bcda…

MALICIOUS

PDF

80.3 KB Created: 2021-03-16 23:52:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 22bc7199c4b91dc2d7e34b03690d19d9 SHA-1: ee850b46553f192fc001312831cfd14ab1903332 SHA-256: ee6f7579f731bcda89a3d035060a3ef27dbcdd4df0a6d90938b8b1ae54506437
226 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. The document body, though heavily obfuscated, contains text related to 'pay it forward film free', suggesting a deceptive lure. The file contains a large number of external links, many hosted on disposable domains, indicating a link farm designed to redirect users to malicious sites. The heuristic 'SE_PAYMENT_REDIRECT_LURE' strongly suggests the intent is to trick users into changing payment details or making fraudulent transactions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://leonvi.ru/123?utm_term=pay+it+forward+film+free PDF link annotation
    • https://nevuvipegigi.weebly.com/uploads/1/3/4/5/134589722/1961a.pdfIn PDF document text
    • https://dorikorojuj.weebly.com/uploads/1/3/3/9/133987202/nudelunolovojak_menab.pdfIn PDF document text
    • https://zojipulororasa.weebly.com/uploads/1/3/6/0/136011419/3da4c28b7f22.pdfIn PDF document text
    • http://naturmilans.fun/why_is_my_iphone_5_battery_draining_so_fast_all_of_a_suddenzw5fz.pdfIn PDF document text
    • https://juxilejaguzu.weebly.com/uploads/1/3/4/4/134404551/figubozarid.pdfIn PDF document text
    • http://peskomment.ru/new_mexico_baby_briannaod42n.pdfIn PDF document text
    • http://choosemadam.site/63835931695tlsby.pdfIn PDF document text
    • https://tilawifi.weebly.com/uploads/1/3/4/4/134480999/mujavalalesuver_ruwus.pdfIn PDF document text
    • http://pozuwigazabo.22web.org/20921257248.pdfIn PDF document text
    • http://pixelbarista.com/dupegipuxeblret.pdfIn PDF document text
    • http://1xbet-registr.site/how_to_reset_casio_watch_date5z90d.pdfIn PDF document text
    • https://suxegetolikas.weebly.com/uploads/1/3/4/0/134097713/4880180.pdfIn PDF document text
    • http://setovewurepenu.22web.org/antichrist_movie_2009.pdfIn PDF document text
    • http://italiahot.fun/panasonic_cordless_phones_with_answering_machine_costcolw77n.pdfIn PDF document text
    • https://gerugufudob.weebly.com/uploads/1/3/4/8/134869234/wejilurirujowej.pdfIn PDF document text
    • http://lassituda.online/whirlpool_washer_model_wtw5000dw1_owners_manualunl67.pdfIn PDF document text
    • http://opt15.ru/principles_of_electronic_materials_and_devices_3rd_solution9estx.pdfIn PDF document text
    • http://vizit.store/ccss_6th_grade_math_final_review_1_answer_key8k0rz.pdfIn PDF document text
    • https://jabuvevakeg.weebly.com/uploads/1/3/4/6/134685488/zemenidubafegaviside.pdfIn PDF document text
    • https://jibunomo.weebly.com/uploads/1/3/5/3/135348462/gokokoxuka.pdfIn PDF document text
    • https://dadixuva.weebly.com/uploads/1/3/4/0/134018012/veliropajixiguxoz.pdfIn PDF document text
    • https://wixezijuni.weebly.com/uploads/1/3/5/3/135312108/wiropesubakuwar.pdfIn PDF document text
    • http://cosmeteca.com/user_story_acceptance_criteria_mountain_goattjxfv.pdfIn PDF document text
    • https://moredotaze.weebly.com/uploads/1/3/0/7/130776260/5848434.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xosofidevutora.epizy.com/endgame_4k_free.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_off0000fb69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB69 5072 bytes
SHA-256: 2f01b1cb0e1ebb0eac50bf328594fe537f4ab3f316f323455c603b8ba62dd570
font_01_sfnt_off00010cb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CB0 11052 bytes
SHA-256: 2403903505bc031bde9bee757d063ac8224c176436e84db5664e591943d73b78

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