Malicious PDF — malware analysis report

Static analysis result for SHA-256 b182c792dcc9d3ce…

MALICIOUS

PDF

71.6 KB Created: 2021-02-11 23:49:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 43d562d1178dd8c26e27f04fc9666b94 SHA-1: e675c2556fa61ef8d8ebddff8a2eb28c86e1dc71 SHA-256: b182c792dcc9d3ce1bc0bd6497d1003cf4ec3f40ca43d7d569cfa7297eac9dea
196 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
  • 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://leonvi.ru/wix?keyword=download+aplikasi+bulu+manga+apk PDF link annotation
    • https://cdn.sqhk.co/losegiro/ajiGhgr/word_jam_israel_level_20.pdfIn PDF document text
    • https://tunibedexorole.weebly.com/uploads/1/3/5/3/135350281/zenujomonu.pdfIn PDF document text
    • https://cdn.sqhk.co/kitaparek/boiPlhc/zilotaxenizosexofuz.pdfIn PDF document text
    • https://cdn.sqhk.co/tipusuzog/IjalLhj/hero_wars_puzzles_only.pdfIn PDF document text
    • https://xekanowodupap.weebly.com/uploads/1/3/0/7/130739303/zaxanogej_daremamupizo_xawewejazot_nuvabinagujuwa.pdfIn PDF document text
    • https://lokeduvedip.weebly.com/uploads/1/3/4/8/134885922/godelixujigifoju.pdfIn PDF document text
    • https://cdn.sqhk.co/wezufunin/eCnieih/lojegavemoma.pdfIn PDF document text
    • https://pirikanupixiro.weebly.com/uploads/1/3/0/8/130873781/38b0effbdd5417.pdfIn PDF document text
    • https://cdn.sqhk.co/lululitoj/KggYjgm/notes_notes_and_lists_for_windows.pdfIn PDF document text
    • https://cdn.sqhk.co/wifopuzuxiba/jagda6C/tumblr_wallpaper_pink_pastel_aesthetic.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
    • https://s3.amazonaws.com/biwubeleba/85491851835.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/25652771741.pdfIn PDF document text
    • https://s3.amazonaws.com/juduk/dental_handpiece_maintenance.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/lanolexukage.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/common_sense_test_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/kosamupim/bully_anniversary_edition_revdl.pdfIn PDF document text
    • https://s3.amazonaws.com/rafiralexezol/inconvenient_sequel_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/8378414710.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_off0000cf37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF37 5160 bytes
SHA-256: da01d2ea95c3c99c9eb072f2fe4a8c9fb380875b2e3d3c969fff98a06970c97b
font_01_sfnt_off0000e0ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0AD 10120 bytes
SHA-256: 5368b1e482f8ca25997c38936fa6d08271fad37b94264498b2047ee9b55756ae
font_02_sfnt_off00010363.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10363 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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