Malicious PDF — malware analysis report

Static analysis result for SHA-256 b29d0bfa45cb1f0a…

MALICIOUS

PDF

68.1 KB Created: 2020-11-10 02:28:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: ec37c791da8b8d363c72fc08ab6dfb30 SHA-1: 575936f65c31b6969fee92743b37adcf25dbecce SHA-256: b29d0bfa45cb1f0a8bb42cb0a22b38c9e84277006e7e6ee7670b6624daf7f02d
254 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
  • 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://traffking.ru/123?keyword=chapter+test+form+a+answers In PDF document text
    • https://gujojiri.weebly.com/uploads/1/3/4/4/134434224/8135857.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd293b85-cd29-4322-b0c7-3a5fca771471/zagajutetele.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aeba57bf-8e9a-461c-a536-a6e1505dbf07/rivumomodopiwoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d9f7b0f-01a2-4ce3-8ea1-23b686765500/mario_games_super_smash_flash_2_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c8651bc-a995-4178-a48c-eb1ef099d718/bt_notifier_app_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b4c458c-3d0d-4697-b5a2-a669ff2a05d5/37744798000.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab47994f-12ed-4a84-bb72-f21f32ce8755/23048547494.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c00d1f1f-9aef-4a5b-a00c-f4feb00dfbb9/krishna_flute_music_mahabharat_mp3_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12c7f15c-cb04-44eb-9c7c-e2c98cca5a5f/denver_banda_desenhada_com_2018_prog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5680e9e-26a2-4d47-ade7-02520bcbc224/pogil_evolution_and_selection_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ceed1f4e-d7cd-4e41-8d95-435452129935/banotuzufegavazavinafi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b87189fc-ecf6-4c0c-aa63-4a8edd58e506/8277894368.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/904268a0-d36b-439a-9203-aa27a1269d39/dd_damage_over_time_spells.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8fb1f6d-9064-4a40-834a-2bb565f3e862/66549676180.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_off0000cdb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDB7 5104 bytes
SHA-256: fccd19639ae2164d78a2f8138fecd93b6b64113c7621e4be63f77282f3424456
font_01_sfnt_off0000def7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF7 10672 bytes
SHA-256: 2abb0fcb2359263c74ffafdc9d0110e6317a2f582214d9d1bf47cafe89fe7496

Open this report in the interactive analyzer, or submit your own file for analysis.