Malicious PDF — malware analysis report

Static analysis result for SHA-256 c619bcd1263c31b2…

MALICIOUS

PDF

74.0 KB Created: 2021-02-11 07:59:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 89a8760f3f4c1638e9dda83b6848c28a SHA-1: dfad8de10af83fd0d953e868a3be26d3ee279211 SHA-256: c619bcd1263c31b22dab1af53995181208ff6d9ddc6a07ba99fdb55ecde600f7
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • 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=track+of+the+wolf+flints PDF link annotation
    • https://cdn.sqhk.co/pobijejok/0YNYUhg/black_christmas_movies_2019_list.pdfIn PDF document text
    • https://cdn.sqhk.co/ludozenidi/hgjhe5p/dead_zone_action_tps_apk_pure.pdfIn PDF document text
    • https://cdn.sqhk.co/doxufojixene/YTthcH1/55795047139.pdfIn PDF document text
    • https://dopotalufiru.weebly.com/uploads/1/3/4/6/134601398/vuxodegofukuwiwa.pdfIn PDF document text
    • https://jogemubo.weebly.com/uploads/1/3/4/3/134321321/6785490.pdfIn PDF document text
    • https://xepevuke.weebly.com/uploads/1/3/0/7/130775471/cdc3212c.pdfIn PDF document text
    • https://cdn.sqhk.co/jotenitix/fjcgjhb/lynx_bus_times.pdfIn PDF document text
    • https://cdn.sqhk.co/daposofoxig/9dDihbu/balloon_arch_prices_durban.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rimutapewite.rf.gd/daworak.pdfIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/alternative_energy_systems_and_applications.pdfIn PDF document text
    • http://mepumubim.rf.gd/stratiform_and_podiform_deposits.pdfIn PDF document text
    • http://jozekajevama.epizy.com/gsssb_head_constable_jamadar_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/christmas_images_free_in_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/tarizirefevifab/codingbat_list_1_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/calculus_and_analytic_geometry_chapter_10.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_off0000e23b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE23B 5072 bytes
SHA-256: 5d45ae0f5faa71793338cc69cb2cc1888a3953b9b7d6f46eb768a7f6a0c46ed8
font_01_sfnt_off0000f38d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF38D 11780 bytes
SHA-256: 3fcf51c0091103121c4ac12374a226e182ef1341d9fcf89c6b26d813ce706376