Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7637ec854f859a0…

MALICIOUS

PDF

73.5 KB Created: 2021-02-04 19:42:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: ddd8ad3c1fc6ba705bf7bc4fbcaf8fd7 SHA-1: 329c3271921b95670c7b1e4d0245316537cc76f0 SHA-256: d7637ec854f859a0e936886168cf069191863b3f9bf86e994cf0d85cb4edc35b
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • 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/wb?keyword=alone%20girl%20photo%20free PDF link annotation
    • https://cdn.sqhk.co/dorejewibiz/Y4Tibij/taniv.pdfIn PDF document text
    • https://cdn.sqhk.co/girolivudafo/jDhebB1/gemoriliji.pdfIn PDF document text
    • https://cdn.sqhk.co/suxevevagova/uHjdhet/dragon_blaze_top_characters.pdfIn PDF document text
    • http://docita.fun/wechat_ban_updatee60p5.pdfIn PDF document text
    • https://porukugo.weebly.com/uploads/1/3/1/3/131380087/gabinasasevonalelux.pdfIn PDF document text
    • http://covid-19online.site/22105621789gk6sg.pdfIn PDF document text
    • https://cdn.sqhk.co/wamobuzo/cgfidR0/diy_marble_solitaire_board.pdfIn PDF document text
    • https://tamejozapana.weebly.com/uploads/1/3/2/8/132814544/dipejekize.pdfIn PDF document text
    • https://boxenujanazikof.weebly.com/uploads/1/3/5/3/135302290/7f571e6b6.pdfIn PDF document text
    • http://axacheat4.xyz/suxefidekuzoxefidasomazikjx52v.pdfIn PDF document text
    • https://golisarupu.weebly.com/uploads/1/3/5/3/135317681/popesojasexenagab.pdfIn PDF document text
    • https://cdn.sqhk.co/mitugejaxel/gDhg6hd/60088075566.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/fazujo/suwopapemidipajetawaxubiv.pdfIn PDF document text
    • https://s3.amazonaws.com/vavapekadoliti/rofosejiwanugumefebowo.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/beethoven_violin_concerto_3rd_movement_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/vinivuxo/articles_of_organization_california_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tisegovofu/arduino_nano_expansion_board_data_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/nonipesikiri/android_vs_ios_2018_users.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e396.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE396 4764 bytes
SHA-256: 341190e0627632a81ba50482c9a6b288f5718c5c215a18cc15cb82efcf02576a
font_01_sfnt_off0000f3cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3CF 10956 bytes
SHA-256: 6b761dfbb719954576e66efb76b7efb1c665489731a7db1ff185ec0ce4ecd11d

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