Malicious PDF — malware analysis report

Static analysis result for SHA-256 fab15bc52076af5b…

MALICIOUS

PDF

68.6 KB Created: 2021-02-23 12:54:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: aea1305ea9fa823076918d436acb289c SHA-1: 75d21ccc5de065d835ba60799fb66dacb10bacfa SHA-256: fab15bc52076af5ba685c0a42373f3d6c294b2f42c9127d4bd110e7651b7b739
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://yafferge.ru/wix?keyword=maytag+performa+dryer+thermal+fuse+location In PDF document text
    • http://itasummer.fun/mega_unblocked_games_minecraftpmsgw.pdfIn PDF document text
    • http://dkblogin-de.best/simple_to_do_list_websitesh4pc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461481/normal_6022a968edfc8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385648/normal_5ff393f14f6c7.pdfIn PDF document text
    • http://betaxosenomagu.iblogger.org/39309540351.pdfIn PDF document text
    • http://workmonster.net/cat_staring_into_space3b6wh.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/tabobujimo/brene_brown_ted_talk_empathy.pdfIn PDF document text
    • http://zevuketeno.rf.gd/oxigenoterapia_puc.pdfIn PDF document text
    • http://beritoka.rf.gd/13288621816.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/bulave_tujhe_yaar_ringtone_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/lentiform_nucleus_body_function.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/political_science_textbook_class_11.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/tamasha_full_movie_watch_online_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/bajrang_dal_ke_song.pdfIn PDF document text
    • https://s3.amazonaws.com/vojapu/23053496630.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_off0000c118.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC118 5556 bytes
SHA-256: 977c4a76eef6b1b18b16ee0c8673b11e71a3365d5b4dca8c56360fc6d6f0ae83
font_01_sfnt_off0000d3e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3E1 10332 bytes
SHA-256: 3972fbf5d8a447e60f1eba49353266e576cac2740a7335f04d9293da1dcf7183
font_02_sfnt_off0000f72e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF72E 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3