Malicious PDF — malware analysis report

Static analysis result for SHA-256 3069fe929e709f55…

MALICIOUS

PDF

83.6 KB Created: 2021-03-18 02:48:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 05d6fc7cd8c8918ae850cc8b39308e76 SHA-1: 693d475ff05b93d2abe02c0835de10ce0f8f59cd SHA-256: 3069fe929e709f5514461e4171d4ec0e9162654ba0777df047c0b552cd917da3
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains numerous external URIs pointing to disposable domains, indicating a link farm designed to redirect users to potentially harmful content. While no scripts were explicitly extracted, the nature of the embedded links and the PDF structure suggests an attempt to exploit users through deceptive links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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 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://fokemale.ru/123?utm_term=email+writing+skills+format PDF link annotation
    • http://ogranifruit.space/66734139274tfljo.pdfIn PDF document text
    • http://hotita.space/beatport_er_online_freea57bh.pdfIn PDF document text
    • http://reduslimitaly-official.site/adobe_flash_cs6_free_download_full_version_with_crack_64_bito6gdy.pdfIn PDF document text
    • http://keysecret.ru/what_to_do_when_a_business_owes_you_moneyn5jvt.pdfIn PDF document text
    • http://natbeach.space/macu_auto_loan_promo_codepajbh.pdfIn PDF document text
    • http://repochka.site/cyberpunk_2077_ps4_pro_vs_ps5u84h8.pdfIn PDF document text
    • http://shop-you.xyz/fikejulogopon4dalc.pdfIn PDF document text
    • http://fotubobuwenapu.scienceontheweb.net/speakeasy_tattoo_los_angeles_location.pdfIn PDF document text
    • http://jiteruruw.sportsontheweb.net/what_is_the_dramatic_irony_in_antigone.pdfIn PDF document text
    • http://fibipowokogo.sportsontheweb.net/ielts_writing_task_2_guide.pdfIn PDF document text
    • http://pedron.fun/td_bank_swift_code_for_wire_transfer6rtyp.pdfIn PDF document text
    • http://tujidal.mypressonline.com/us_history_workbook.pdfIn PDF document text
    • http://free-at.pro/59203892798su19j.pdfIn PDF document text
    • http://easycreditscore.info/sap_inbound_delivery_partner_tablehrs6c.pdfIn PDF document text
    • http://jufanurozud.getenjoyment.net/9759002547.pdfIn PDF document text
    • http://callipakk2.site/48_laws_of_power_50th_law_booksyd9tr.pdfIn PDF document text
    • http://xizerunax.scienceontheweb.net/solving_equations_and_inequalities_quiz.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
    • http://zirutabu.myartsonline.com/dell_latitude_e6430_laptop_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/zuponefi/guess_the_brand_level_28_orange.pdfIn PDF document text
    • https://s3.amazonaws.com/mojivikapeti/household_budget_template_for_numbers.pdfIn PDF document text
    • https://s3.amazonaws.com/jijari/how_to_clean_a_vicks_germ_free_humidifier_filter.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ff43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF43 4872 bytes
SHA-256: 83baa379e4e6efaffe8ca302aaa1221befad4853848166f9b49424d228518963
font_01_sfnt_off00010fb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FB9 10256 bytes
SHA-256: 381ac0edcf27b42506f3b45acda771bf5573394edd99765e835b4f0302d13413
font_02_sfnt_off0001327e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1327E 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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