Malicious PDF — malware analysis report

Static analysis result for SHA-256 03564927000a5a79…

MALICIOUS

PDF

88.9 KB Created: 2021-05-11 11:05:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: e3c39eab130607a3fe3670ec830e6275 SHA-1: a5f28b07d1008137b1bbbd2931acc34a8b8d89c8 SHA-256: 03564927000a5a792f546135520abde5ca7576e45f3209569269a650b7c247f3
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing operation. The presence of external URIs and the 'link farm' heuristic strongly indicate an attempt to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://vilenefex.ru/strik?utm_term=cuisinart+burr+and+grind+coffee+maker+manual PDF link annotation
    • http://ripefaw.iblogger.org/fazunagosigezaw.pdfIn PDF document text
    • http://wifunagidoli.mypressonline.com/cinquenta_tons_de_cinza_docero.pdfIn PDF document text
    • https://wezenazuzive.weebly.com/uploads/1/3/4/7/134764498/1135170.pdfIn PDF document text
    • http://wejuzofibab.medianewsonline.com/ncert_notes_for_class_11_chemistry_chapter_1_download.pdfIn PDF document text
    • http://gikonifip.22web.org/cinema_paradiso_love_theme_piano.pdfIn PDF document text
    • http://vowewudimo.mypressonline.com/alias_grace_espaol.pdfIn PDF document text
    • http://digitaloffice24.ru/yellow_triangle_when_charging_phoneuqf98.pdfIn PDF document text
    • https://joxobupapi.weebly.com/uploads/1/3/1/4/131454586/8686345.pdfIn PDF document text
    • http://kitafoged.medianewsonline.com/ankle_sprain_physical_therapy.pdfIn PDF document text
    • http://xevojifixifepi.scienceontheweb.net/vilafavagabepomu.pdfIn PDF document text
    • http://alifan.store/60614816562k38qn.pdfIn PDF document text
    • http://lobabinuladeri.medianewsonline.com/what_colour_is_your_parachute_2020.pdfIn PDF document text
    • http://devlp.design/tulidoraniwo3begz.pdfIn PDF document text
    • http://lorozetuwivu.medianewsonline.com/hegemonya_nedir.pdfIn PDF document text
    • http://sopesukenapad.scienceontheweb.net/how_to_set_answering_machine_on_panasonic_dect_6.0_plus.pdfIn PDF document text
    • http://fafizaso.iblogger.org/55735728045.pdfIn PDF document text
    • http://lunamawel.22web.org/wutodajuvudare.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tuzibepunu.rf.gd/vidajomanulefaxotagawonoz.pdfIn PDF document text
    • http://fosixokosed.rf.gd/pogapibobuti.pdfIn PDF document text
    • http://gumomexad.onlinewebshop.net/indoor_air_pollution_nptel.pdfIn PDF document text
    • http://fezovinu.epizy.com/coping_with_anger_worksheet.pdfIn PDF document text
    • http://rosaboz.rf.gd/48132824958.pdfIn PDF document text
    • http://zitulogakapede.myartsonline.com/60382232692.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_off0001102f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1102F 5452 bytes
SHA-256: 74198ee8ce70bd19c730fb8e321f45936cde6b8045f60d4b9c99fac071da9f9c
font_01_sfnt_off0001229c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1229C 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off00012b29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B29 12508 bytes
SHA-256: 0807ffa266870cda360c362f7f66a657a22cd85d82daafbd888540fce9f469ce

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