Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc2f6c91a5d89696…

MALICIOUS

PDF

84.5 KB Created: 2021-04-24 09:22:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: bb6445056b5d58c2b1796f24aab04e34 SHA-1: 235f40cbcc344bfb318224e552c561b9fe3ec81f SHA-256: bc2f6c91a5d896967c634a8888216a67c55b4c651cf7c7665f3e434394021c5b
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many of which are to benign-looking PDF files, suggesting a link farm or SEO poisoning tactic. The heuristic 'PDF_SEO_LINK_FARM' and the presence of numerous URLs strongly indicate this malicious intent. While no scripts were directly extracted, the PDF structure and the nature of the links suggest it's designed to redirect users to potentially malicious content, possibly as a phishing or malware distribution lure.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://maypoin.ru/strik?utm_term=tricks+ellen+hopkins+pdf+free+download PDF link annotation
    • http://bestgirl69.com/veritext_court_reporting_mineola_ny5oexh.pdfIn PDF document text
    • https://zitewamim.weebly.com/uploads/1/3/1/4/131454986/wadevefawuzu-dotiratineriz-melorekirix.pdfIn PDF document text
    • http://venira.su/vanity_fair_season_cast4d032.pdfIn PDF document text
    • https://cdn.sqhk.co/loboremetoxe/TjgJigj/jet_car_stunts_3_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/mowezeto/hhYieJz/shopping_mall_fashion_store_high_school_girl_games.pdfIn PDF document text
    • https://devojakosumu.weebly.com/uploads/1/3/5/3/135314674/b69689.pdfIn PDF document text
    • http://wisecredit.info/i_am_that_guy_agar_agartbvfl.pdfIn PDF document text
    • https://cdn.sqhk.co/zowipitilo/zjfhggi/gun_master_3d_not_responding.pdfIn PDF document text
    • https://cdn.sqhk.co/loberutebe/gid78ck/57617704093.pdfIn PDF document text
    • http://www-sfr-fr-monespace.com/puwiwemotukesezosojovetucnfk.pdfIn PDF document text
    • http://tizezs.xyz/how_much_to_get_iso_9001_certificationpv6b2.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/wixanarer/game_of_thrones_intro_music_sheet_violin.pdfIn PDF document text
    • https://e055bcc9-c4f1-4c6c-8dcb-0912bf54750f.filesusr.com/ugd/b4a829_97c0fd7f79e64933b111ff7647f72048.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/on_becoming_a_person_by_carl_r._rogers.pdfIn PDF document text
    • https://s3.amazonaws.com/dupula/357665323.pdfIn PDF document text
    • https://s3.amazonaws.com/pokorevalaxex/pudukabuxezasopotixaz.pdfIn PDF document text
    • https://528f6e5c-6927-42ef-b7a5-a8f9c349750c.filesusr.com/ugd/07b979_ccd8b53dee774e1d9672b18d2fe53bda.pdf?index=trueIn PDF document text
    • https://023e3b0e-89aa-4e00-bd19-175c11a0a9c0.filesusr.com/ugd/5f4883_f092c977f68c4990ab7e4770430e31f9.pdf?index=trueIn PDF document text
    • https://c30b87d5-e38e-4f4c-8f61-e356d9eaafe8.filesusr.com/ugd/347120_5491580b9c1d49fba172edf4d0f90c90.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE3E 5056 bytes
SHA-256: d45f5ecb5ef1ca3a89411109cbbd96319b7990445b53e369a7dbe509a30effb0
font_01_sfnt_off00010f63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F63 11464 bytes
SHA-256: c68d74f13ad950a93ad448fe06c13bb0211383d54d81428749c3cf5754db1c03
font_02_sfnt_off000136a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136A0 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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