Malicious PDF — malware analysis report

Static analysis result for SHA-256 80ad99659b890756…

MALICIOUS

PDF

81.4 KB Created: 2021-03-20 18:34:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 29d7d3c715712de5e2533a26b2b1d0d5 SHA-1: adfbfbb26e6396ed4fa912e092adc2a68c9779aa SHA-256: 80ad99659b8907561a1fb3aee1dc5a291d8fd4e9173f29f75ee3d8a4d9b4f0e9
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a lure related to 'geronimo stilton season 2 online free' and an embedded URI pointing to a suspicious domain, 'ponafet.ru'. Heuristics indicate this is a phishing attempt using an SEO redirector to disguise the malicious link. While no scripts were explicitly extracted, the ML classifier and ClamAV detection strongly suggest malicious intent, likely to download a secondary payload or redirect to a phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ponafet.ru/strik?utm_term=watch+geronimo+stilton+season+2+online+free PDF link annotation
    • https://cdn.sqhk.co/jaxabofapuw/0hbTccd/disable_voice_keyboard_android.pdfIn PDF document text
    • https://cdn.sqhk.co/bosesegivu/egiHcgg/3013825992.pdfIn PDF document text
    • https://cdn.sqhk.co/linotepibubi/hixhd0q/34674013458.pdfIn PDF document text
    • https://cdn.sqhk.co/rogumabutur/qheThfl/ten_pin_bowling_games_to_play_for_free.pdfIn PDF document text
    • https://cdn.sqhk.co/jedugifaxido/jHeWCji/apple_dessert_recipes_dairy_free.pdfIn PDF document text
    • https://cdn.sqhk.co/naxupowu/djchihc/xixivivifuzidapix.pdfIn PDF document text
    • https://cdn.sqhk.co/jojojidatun/0iggehg/ipl_live_cricket_match_app_free.pdfIn PDF document text
    • https://cdn.sqhk.co/nomevagume/ghiggic/cessna_310_service_manual.pdfIn PDF document text
    • http://cmbclientes.com/zebavipobujokixaouui5.pdfIn PDF document text
    • http://femokotafi.66ghz.com/82345197366.pdfIn PDF document text
    • https://cdn.sqhk.co/leburogutu/ejcjahg/free_wallpapers_for_samsung_a20.pdfIn PDF document text
    • https://cdn.sqhk.co/bularalunop/jfjeuaO/get_real_followers_twitter.pdfIn PDF document text
    • http://begemotiks.fun/fill_in_character_sheet_5eucbfm.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/2aaf07f8-8cbf-4bea-8808-b17934f1b29e/69967065340.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f44fc8ed-1d3b-4248-bd18-ae1e105739d1/58674144610.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28bd88b2-09bd-433e-9a74-057c8d58a7e1/85326284030.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae70b41d-02df-4203-85b4-c8bdd91ff4ae/81258626476.pdfIn PDF document text
    • http://libejojas.epizy.com/95911173488.pdfIn PDF document text
    • http://xapitolo.rf.gd/how_to_make_a_green_christmas_tree_look_snowy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a56e1b65-13f0-4a8a-b4c3-857a36576846/3d_origami_book_free_download.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_off0000f1f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1F6 5228 bytes
SHA-256: 7f8f3f537412ec0458694f947c30de7d5fcfa20c727ca977713fac0ad60b781d
font_01_sfnt_off00010395.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10395 11240 bytes
SHA-256: c9ca90244d86717d6f8a801988672f7932a3f190dbc69f948e7130f05cba2444
font_02_sfnt_off000129ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129EF 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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