Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec237d3c542c05da…

MALICIOUS

PDF

71.7 KB Created: 2021-03-03 14:46:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: b42e6c15eeed612d8a166970ac670c1d SHA-1: 8a00e417adfda7fb065ec32cc00c696146f3dda4 SHA-256: ec237d3c542c05da0e572b3f5298051679f6f0616698bdb19ccb4c5a0ca5825d
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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.
  • 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/award?keyword=garmin+2689+battery In PDF document text
    • https://cdn-cms.f-static.net/uploads/4496391/normal_60376a09ad79d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447464/normal_603765961e8a8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415081/normal_5fcd0beb61d9b.pdfIn PDF document text
    • https://gobodozi.weebly.com/uploads/1/3/1/3/131398455/jimaxidiruvogavom.pdfIn PDF document text
    • https://cdn.sqhk.co/koporikog/5eDhhph/oxenfree_game_switch.pdfIn PDF document text
    • https://buzijivugaza.weebly.com/uploads/1/3/4/7/134709386/vosanubivipepuj_zetudam.pdfIn PDF document text
    • https://cdn.sqhk.co/buzosefif/idSbhi6/disney_movie_scandals.pdfIn PDF document text
    • http://jolidulikan.scienceontheweb.net/how_to_describe_touching_someones_face.pdfIn PDF document text
    • https://vunisanelebori.weebly.com/uploads/1/3/3/9/133999195/3e889a8e196.pdfIn PDF document text
    • https://kevefizi.weebly.com/uploads/1/3/1/8/131871405/12f5f7b.pdfIn PDF document text
    • https://cdn.sqhk.co/nivopekodi/ljjqDgd/waifu_wars_commands.pdfIn PDF document text
    • https://bexukisutiso.weebly.com/uploads/1/3/0/8/130873741/pegug_morefuwipezano_pukako.pdfIn PDF document text
    • https://vimudizod.weebly.com/uploads/1/3/4/6/134632239/7907496.pdfIn PDF document text
    • https://cdn.sqhk.co/baxijaxazixi/vKigMdr/modern_zig_zag_wallpaper_black_and_white.pdfIn PDF document text
    • https://cdn.sqhk.co/limiwebu/N1Ejhje/deer_hunter_classic_online_generator.pdfIn PDF document text
    • https://kowalarezanir.weebly.com/uploads/1/3/1/4/131438161/guxesonepurupavif.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kubomefewofumim.atwebpages.com/book_of_noah_online.pdfIn PDF document text
    • http://xurosuforudev.atwebpages.com/20266612537.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/peak_performance_jacka_dam_helium.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_off0000daf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAF4 5528 bytes
SHA-256: 01906698ec6b7597d4d3b9c9ceda4e3938a6215eed305a4ec47865d70822931d
font_01_sfnt_off0000edad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDAD 10792 bytes
SHA-256: 80d5cddbec5883ea43c6f877f346c0427b9be2e324aebc97d3b2b3c9b8b64a41