Malicious PDF — malware analysis report

Static analysis result for SHA-256 b37f7470147f8e6c…

MALICIOUS

PDF

131.5 KB Created: 2021-04-24 19:47:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 73e63aebe443a2bf8f73fccacb9925f2 SHA-1: 8410b93fa21b8d20bd656f96db6a16ad3b4905f1 SHA-256: b37f7470147f8e6c7879e4cc66f8c7bdc97c14af20e36ff84500cddf69751f0f
194 Risk Score

Malware Insights

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

The PDF contains heuristics indicating it is a malicious redirector and an advance-fee scam lure. The embedded URL points to a known malicious redirector, likely intended to lead the user to a phishing or malware download site. No scripts were extracted, but the presence of malicious links and scam content strongly suggests a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://yafferge.ru/strik?utm_term=what+jobs+can+you+get+with+digital+design In PDF document text
    • http://varietystore.website/cyrano_de_bergerac_movie_traileroyh3w.pdfIn PDF document text
    • https://cdn.sqhk.co/wavivatus/hTNqqay/68510111461.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450635/normal_5feb31e180afc.pdfIn PDF document text
    • https://cdn.sqhk.co/petawelesup/hHgfhj8/e_with_accent_spanish_copy_and_paste.pdfIn PDF document text
    • https://cdn.sqhk.co/lusikagidet/fhgkgd8/xitexidanupo.pdfIn PDF document text
    • https://cdn.sqhk.co/furigelo/bhqsFjh/sdg_goal_4_targets_and_indicators.pdfIn PDF document text
    • https://cdn.sqhk.co/xovepejegosi/ggiagdf/gonapuximif.pdfIn PDF document text
    • https://cdn.sqhk.co/sesudegaruta/KgelWvO/tabletop_simulator_steam_sale_history.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427282/normal_5fea004be22f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388596/normal_5fd7e45b5215c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380527/normal_606cd2177bc3f.pdfIn PDF document text
    • https://cdn.sqhk.co/dovoxukeni/5djc36e/89349214286.pdfIn PDF document text
    • http://pokemonrivals.online/karcher_pressure_washer_enginepfnxy.pdfIn PDF document text
    • https://cdn.sqhk.co/satukevaguka/jq4mzif/hanayama_puzzle_level_4_cylinder.pdfIn PDF document text
    • https://cdn.sqhk.co/lajagika/fQhihaH/paranormal_files_4_hook_man_s_legend.pdfIn PDF document text
    • https://cdn.sqhk.co/munenetifu/jA2ojhA/capitulo_5a-_8_crossword_answers.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xalasawu/swot_analysis_of_samsung_company.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/garizuva.pdfIn PDF document text
    • https://s3.amazonaws.com/woxorojero/employee_background_check_form_template.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/dudixoreponamiwusekeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a05a996a-ecd5-424a-9a15-dce9ed8bb6c0/tetukigifute.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd712859-3ec2-4ede-b1d3-648914ab1f15/wukimoxilupimuguv.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/las_batallas_en_el_desierto_todos_los_personajes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c0a01bf-d93b-46dc-a03a-547edb6d80d7/90125259388.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0df6bcd2-ec03-49b6-9029-3db303be5c22/white_christmas_tree_with_purple_and_blue_decorations.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_off0001c665.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C665 5528 bytes
SHA-256: f7eadebfb3119efb52c46104287b12b665c970fd27b27ae58c4143cadeb5cef6
font_01_sfnt_off0001d94d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D94D 11440 bytes
SHA-256: ab14de3c6c7dae0d072474ee388044450b04bafe5f2a277eba6af77e56bd6f30