Malicious PDF — malware analysis report

Static analysis result for SHA-256 e97d86a702fab499…

MALICIOUS

PDF

44.7 KB Created: 2020-10-08 13:46:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f7632e67e34db827a719d870d1378802 SHA-1: f65001aa06b112841464fc1c68a1e6a2e44e633e SHA-256: e97d86a702fab499f341cbb9ae3b23bf7405623c43b662ddb5b0411cc6049b00
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.club/pify?keyword=minecraft+mods+1.6.4 In PDF document text
    • http://files.merarifernandez.com/uploads/1/3/1/4/131407165/6839308.pdfIn PDF document text
    • http://files.thewhoresofyore.com/uploads/1/3/1/4/131438464/warobipe_xujenurotulonu_wapaxu.pdfIn PDF document text
    • http://files.nickhudson.ca/uploads/1/3/1/3/131384663/8910399.pdfIn PDF document text
    • http://nefujo.fashionspeaks.net/uploads/1/3/1/8/131856166/81317657fadde28.pdfIn PDF document text
    • http://tijunetal.theshopservice.com/uploads/1/3/1/4/131452903/wazuwobekupupop_vexijukega_sutopoxikagok_vokuw.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://uploads.strikinglycdn.com/files/7d47d5e7-88c7-4eb2-bb22-318cabbfe9e1/reweravuwe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd494fa6-ca9e-49d1-a005-350fd62a28f8/gaseripamatina.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b466307-fe3b-4636-8fa5-d79f51db92da/pegugefodiwufebazurepumi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd6bbbe9-fddd-400e-853e-adffef80b6a0/veluxoxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6148/6503/files/nofekuwafusowenunab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3633/4501/files/rosetta_stone_chinese_lifetime.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3423/0429/files/la_dispute_yann_tiersen_sheet_music_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5571/7279/files/learn_2_fly_2_unblocked_games_66.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8730/7946/files/xunatakofizovamisaguguref.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/5093/3928/files/raft_wars_2_hacked_unblocked_66.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9377/8837/files/this_order_contains_a_gift_amazon.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_off000062da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62DA 5252 bytes
SHA-256: b2205c515b8853f43a878b9227768b0745356aabd1131a05cfd017290fe59e32
font_01_sfnt_off000074a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74A6 10276 bytes
SHA-256: 84d367b2d6f002092758eecb8df2433a2557513234ac1175af3b625c20697a61
font_02_sfnt_off000097c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97C9 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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