Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae36084933136ed9…

MALICIOUS

PDF

69.3 KB Created: 2021-01-29 20:18:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 82cf0c381796bff21ce86c9ef4066ffb SHA-1: d83f593cdb24642427034bb4deb2c73676373ab4 SHA-256: ae36084933136ed907dba476c2eb07ea1b362bfb283c4126beafa6ef3e44a782
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wb?keyword=radio%20shack%20near%20me%20phone%20number PDF link annotation
    • https://cdn.sqhk.co/tipefimex/hjfjcfd/mofodorupoj.pdfIn PDF document text
    • https://cdn.sqhk.co/fipimomozuk/jjCUyes/bible_coloring_pages_adam_and_eve.pdfIn PDF document text
    • https://ropugobefele.weebly.com/uploads/1/3/4/4/134445072/fibew.pdfIn PDF document text
    • https://cdn.sqhk.co/fafujedajir/AaJBUjh/stickman_world_war_2_games_xbox_one.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/xakapudakadu/destiny_2_leviathan_raid_underbelly_guide.pdfIn PDF document text
    • http://kagubosewox.epizy.com/trance_acapellas_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/abrasion_corneal_tratamiento.pdfIn PDF document text
    • https://s3.amazonaws.com/juvosi/sheets_absorbing_oil.pdfIn PDF document text
    • http://nawupewiviziwik.rf.gd/lamadanaxowof.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/addendum_format_in_word.pdfIn PDF document text
    • https://s3.amazonaws.com/medaliwifufugel/definition_management_accounting_information.pdfIn PDF document text
    • http://nezenomawaza.epizy.com/sitofezegebomenaloromezur.pdfIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/chart_library_android_github.pdfIn PDF document text
    • http://bokonejedebi.rf.gd/ugly_betty_imdb_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/fractions_word_problems_worksheets_for_grade_5.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_off0000d429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD429 5492 bytes
SHA-256: b6f1e84ed13d93122b6919b8251abad6db44c5fa0de36e63b71afe7a6b4afde5
font_01_sfnt_off0000e6a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6A9 9888 bytes
SHA-256: ceb7a848ee26a80cf50372324c940b2ae802d3f10cddfb2089f84b8dc92c22ab