Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4c200276ca955d6…

MALICIOUS

PDF

69.7 KB Created: 2021-01-06 22:47:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7aacba4a2b73d9007d81ded5a2143bd8 SHA-1: 1d647afa28802c1e6888abc49528ff6a907bc0d8 SHA-256: b4c200276ca955d61d775f88f7b01a0e49710e97f8c9adcd1191f8bbb368fd06
186 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://traffnew.ru/wb?keyword=logo%20quiz%20uk%20printable PDF link annotation
    • https://cdn.sqhk.co/tasokuxu/cehihfD/vikugokot.pdfIn PDF document text
    • https://sipedevesebin.weebly.com/uploads/1/3/4/8/134879103/2864803.pdfIn PDF document text
    • https://cdn.sqhk.co/vatuliwa/cgdjbkw/find_words_using_really.pdfIn PDF document text
    • https://fidinavaxevipew.weebly.com/uploads/1/3/4/8/134876378/woviluvixudunitom.pdfIn PDF document text
    • https://buxexemap.weebly.com/uploads/1/3/4/8/134890763/9386938.pdfIn PDF document text
    • https://tanezogifa.weebly.com/uploads/1/3/4/3/134321065/bd7669f36.pdfIn PDF document text
    • https://cdn.sqhk.co/lolajelor/hfhgIRH/rimiputidubilowijiz.pdfIn PDF document text
    • https://cdn.sqhk.co/zumovinej/BjQ9idp/gozadebexojutedotoxoteto.pdfIn PDF document text
    • https://cdn.sqhk.co/doxutijewu/VQjaVjd/miraculous_ladybug_and_cat_noir_gamer_full_episode.pdfIn PDF document text
    • https://jamuseramomuf.weebly.com/uploads/1/3/1/8/131871426/509f6285.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/e27a2c5c-fef1-4636-a4be-a2c5e52fc0ac/conjunctions_worksheets_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/74876455132.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/guideline_social_marketing.pdfIn PDF document text
    • https://s3.amazonaws.com/wudibirewuduto/jeep_grand_cherokee_2014_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/shawshank_redemption_movie_parents_guide.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_off0000d5c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5C2 5128 bytes
SHA-256: 15d27ca4514fe7cb28db66939bb6746639fb6a35b9f3c710a47660811202462d
font_01_sfnt_off0000e752.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE752 10316 bytes
SHA-256: be73c09ba24d3b4bfdd805f948ee27d0b2fe56e3c1b317348f855cb288c0b795