Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bd84180678535c0…

MALICIOUS

PDF

72.3 KB Created: 2021-03-09 21:43:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b3576e59fcb71481714b0e2e8dd95ded SHA-1: 94cb55698395d2e52cc2117e509e143f3ee94451 SHA-256: 2bd84180678535c0663a31f493b22e8a176f01eeaf64bd59bb4250a3647f4f52
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://dugedepap.ru/wix?keyword=pre+lab+questions+experiment+7 PDF link annotation
    • https://bitiwinelezom.weebly.com/uploads/1/3/1/8/131856531/335010.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384299/normal_60405699bc7f4.pdfIn PDF document text
    • http://xokebidukefu.getenjoyment.net/kuzumaji.pdfIn PDF document text
    • http://mekomob.getenjoyment.net/gijoxukemo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422134/normal_60362ccc30518.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443325/normal_6004118599c3d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452400/normal_5ff3e661ae2bd.pdfIn PDF document text
    • https://gojafone.weebly.com/uploads/1/3/4/8/134891791/bec9c7b0f24411e.pdfIn PDF document text
    • http://najetaxu.mygamesonline.org/60027954333.pdfIn PDF document text
    • https://vidowenabep.weebly.com/uploads/1/3/5/3/135322196/6fc4c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416299/normal_5fe0874e64bf4.pdfIn PDF document text
    • https://resodarapasak.weebly.com/uploads/1/3/4/6/134659305/jonibe.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://dimaninerif.rf.gd/35823610214.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/18181840289.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/85326520490.pdfIn PDF document text
    • https://s3.amazonaws.com/zuponefi/article_writing_format_for_school_magazine.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/how_do_you_reheat_maggianos_spaghetti.pdfIn PDF document text
    • https://s3.amazonaws.com/xonaxevetaf/percy_jackson_greek_gods_characters.pdfIn PDF document text
    • http://kirojera.rf.gd/pezudofejujidazuta.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/the_island_castaway_lost_world_walkthrough_chapter_3.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/4986892657.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/lg_blu_ray_player_apps.pdfIn PDF document text
    • http://xevesekelegi.epizy.com/uniformly_accelerated_motion_physics.pdfIn PDF document text
    • http://marakolin.epizy.com/tejegorumil.pdfIn PDF document text
    • http://tuwemajufa.rf.gd/kujalexopomitukekixukap.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/25619762334.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_off0000d023.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD023 5260 bytes
SHA-256: 8c8f32becfdd1b2d777a551411661f26d8fbe3d91eedff78e60d7be823e46ebc
font_01_sfnt_off0000e1f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F1 10232 bytes
SHA-256: 0ae1b1fcc711af529589d273c5a58e235c7719a5b085c545d9e693b738113a3d
font_02_sfnt_off00010500.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10500 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c