Malicious PDF — malware analysis report

Static analysis result for SHA-256 2678f5d91d3052c9…

MALICIOUS

PDF

70.4 KB Created: 2021-02-18 09:53:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 39db7fd8eeef7546ef50885853aa9d47 SHA-1: baebcd7e0614959b6327aa9b12e2fabdb52f1c65 SHA-256: 2678f5d91d3052c904a310603ea73b9b1d2afb753cef02de65a0ae96561e9363
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://seumenha.ru/wix?keyword=ngay+gio+dau+cua+me PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4457330/normal_601dcf5200266.pdfIn PDF document text
    • https://dabusoze.weebly.com/uploads/1/3/4/5/134585091/5831668.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370089/normal_6003724e3bcba.pdfIn PDF document text
    • https://vabeliguteziji.weebly.com/uploads/1/3/1/3/131379360/magazagabadu.pdfIn PDF document text
    • https://dasezakam.weebly.com/uploads/1/3/4/8/134883145/3d938.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481667/normal_600e98429c94a.pdfIn PDF document text
    • https://burevojaziji.weebly.com/uploads/1/3/4/7/134729690/1f9c55a797.pdfIn PDF document text
    • https://cdn.sqhk.co/wogirujut/iigiggS/u-_mobile_prepaid_sim_card_japan.pdfIn PDF document text
    • https://tadivibudup.weebly.com/uploads/1/3/4/8/134899420/628ce39.pdfIn PDF document text
    • https://cdn.sqhk.co/fejukomus/ichfhf3/95512588210.pdfIn PDF document text
    • https://cdn.sqhk.co/gadewekunel/ffbgdjd/difirez.pdfIn PDF document text
    • https://cdn.sqhk.co/nuditufu/gj2jhid/fogofikobupowavurigumo.pdfIn PDF document text
    • https://cdn.sqhk.co/benibavagoge/rhihhgg/pokemon_tower_defense_2_hacked_full_version.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386839/normal_6005ef00f02f3.pdfIn PDF document text
    • https://gewipilozu.weebly.com/uploads/1/3/0/7/130775211/jegekatore.pdfIn PDF document text
    • https://cdn.sqhk.co/tivuzofep/dWUlVhd/58589025083.pdfIn PDF document text
    • https://cdn.sqhk.co/venitalobeni/gNLidVc/basketball_shooting_gun_price.pdfIn PDF document text
    • https://cdn.sqhk.co/raxoxawupej/jejJRhl/buggy_racing_australia.pdfIn PDF document text
    • https://sirowatogiwu.weebly.com/uploads/1/3/2/8/132814809/1672708.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/jejulurowev/38638405289.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/gmail_api_read_email_android.pdfIn PDF document text
    • https://s3.amazonaws.com/xidulumexi/windows_7_boot_updater_software_free.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_off0000d982.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD982 5024 bytes
SHA-256: 5a247100683672267494730d9e0c67abf4abb3ea182e4195c2a741093681c1b4
font_01_sfnt_off0000ea9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA9E 9952 bytes
SHA-256: 01f47f9c2e936c631d398c962156685f4d884347b0bc7a1d3c51032947f1844a

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