Malicious PDF — malware analysis report

Static analysis result for SHA-256 831998e3bbed50ff…

MALICIOUS

PDF

70.0 KB Created: 2021-03-05 10:27:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 47a57db2f022e8e0c48f9620c1f99d1f SHA-1: 62020bdc3854ff74e1e0935bb9b4e49f8784d7ea SHA-256: 831998e3bbed50ff862514c19a6b3cae217bd13da4937db8854730552e888784
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://mezovuduw.ru/award?keyword=d+and+d+dice+holder PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4380867/normal_600ce4f5224ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446930/normal_60197bc09d7b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500877/normal_600e25c9c6027.pdfIn PDF document text
    • https://bexudedumazises.weebly.com/uploads/1/3/1/4/131406785/modifodiv-kipivuwoxubuw.pdfIn PDF document text
    • https://wozukofa.weebly.com/uploads/1/3/2/3/132303282/cc84f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://86908e24-11f3-43a1-9346-bf531f45ee0b.filesusr.com/ugd/97493d_8b530217cd9544f8acba514f319596cb.pdf?index=trueIn PDF document text
    • https://9df6fdd8-df71-43fb-87ad-b121b2de7416.filesusr.com/ugd/e0d0cf_659fdbe1acb241039f078e0b1aac45ae.pdf?index=trueIn PDF document text
    • https://19aaccd0-9772-41b6-85c4-be118606641a.filesusr.com/ugd/a12125_54509ebe321a4812a871286eb4b5c895.pdf?index=trueIn PDF document text
    • http://petafifagaj.rf.gd/love_story_2_movie_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/ligole/wheels_on_the_bus_free_mp4.pdfIn PDF document text
    • https://41c240d9-b4af-4f88-8fa4-2a41cce3a287.filesusr.com/ugd/01bc73_e00a974ad6c64f438f3551f95b69ba38.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/scrabble_can_you_play_two_words_at_once.pdfIn PDF document text
    • http://zemigubu.epizy.com/13367231026.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/what_kind_of_passwords_can_john_the_ripper_crack.pdfIn PDF document text
    • http://vabijikabijapul.rf.gd/34695778181.pdfIn PDF document text
    • https://8772a198-af03-49ef-8724-5feb7546cb8a.filesusr.com/ugd/436f04_bbb0bce074dc404aa1aec39a46afab91.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xulikamul/makalah_sumber_daya_manusia.pdfIn PDF document text
    • https://39c1d623-eccb-4af0-a86a-15328a2d61f9.filesusr.com/ugd/3cb6cb_82444405c6b241c4bb90d2d55f6f5be9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zikeko/95895924984.pdfIn PDF document text
    • https://318abaa7-a496-4882-a5ef-186b1d719b20.filesusr.com/ugd/ff2e65_c5a05ff160854feab6e821f7e7f03607.pdf?index=trueIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d6f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6F4 4848 bytes
SHA-256: 1eed81bd25028188b1593f12c5aa662c53d62c868a948b230feb60702927fdf4
font_01_sfnt_off0000e76e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE76E 10464 bytes
SHA-256: 9bb0c5c09453455d73aab6597802e963c973a9685aa0edf50f3c915a55fea154

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