Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0899b20b3a8fee5…

MALICIOUS

PDF

68.6 KB Created: 2020-12-17 04:56:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 8b322ed8ccb6e94b66fbf17b83f95760 SHA-1: 3fbd6061f42bc35ecd4c116e3ef94952ee517131 SHA-256: e0899b20b3a8fee5e409a15a252a6e5575e8bf8fcb877c98a2586cecc1ec46b7
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://cctraff.ru/aws?utm_term=mayrhofen+snow+report+december In PDF document text
    • https://cdn-cms.f-static.net/uploads/4413231/normal_5f968081f1fab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450241/normal_5f9e5a3fa61d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495536/normal_5fbd2475510df.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/ae0dea8c-9ee4-4b35-bc5d-1ca10432a056/72979542787.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce547a90e5b06becb6a36f/t/5fd0979148ae4d1218052aa2/1607505810031/xojotedowepemusikojepana.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7d2a53f-65ed-46bd-b7f5-acab7cbb60a2/zazuvarejuvodujuvi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce79424981a0308257053f/t/5fd64e9f164d0f203c786906/1607880352052/6624902070.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/audiovisual_translation_dubbing.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4d452bda9c57a97d752dd/t/5fd65ab2dca221526040b047/1607883444682/bangla_onubad_boi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e110403f5353fd95a22f/t/5fd116e9de23090f28854533/1607538410105/twitter_log_out_computer.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe11ccf3de5e49b52bd953/1606291916403/bubble_tanks_4_armor_games.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc12df85bcb0228a284406c/t/5fc6569ebc819f1cf4b061a7/1606833823573/word_crush_level_410_answers.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5adbcf9866f3fd2f48671/t/5fd709c09264095525eac4a6/1607928256825/dental_auxiliary_timesheet.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd011a72f8b574a0f3fd72/1606222112480/vulafivenumusapowuga.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f7fbe9fc3622d5227cd2/t/5fc6d46148d5672cfb2c2951/1606866018553/how_to_play_solitaire_online_with_friends.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_off0000c9fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9FC 5704 bytes
SHA-256: 56ca2c30d0a6372a7080cc625a4077dc4344e55416d76dffdfe699765573b8b4
font_01_sfnt_off0000dd60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD60 11724 bytes
SHA-256: 3bda09b59889830b59a00358f497668e31d750b9a788e93c1c3668487c09aa10

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