Malicious PDF — malware analysis report

Static analysis result for SHA-256 26cfeb279dca361a…

MALICIOUS

PDF

74.4 KB Created: 2021-03-18 08:49:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 88ee1a25515eff1b41e1106c7ebc1ccc SHA-1: a4f09f80a238ebc5170b2c767f759777af5aabf4 SHA-256: 26cfeb279dca361a74150be66d4fd603b1470e075ac47b65043add9056461e43
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, and the document body text, though heavily obfuscated, appears to reference translation services. This suggests a phishing or malware distribution attempt, likely using the lure of a translation tool to trick the user into visiting the malicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://nipisod.ru/award?keyword=google+translate+pdf+english+to+russian PDF link annotation
    • http://nusururak.22web.org/13934554808.pdfIn PDF document text
    • http://tonojodozif.mypressonline.com/54164781395.pdfIn PDF document text
    • http://dapurixid.sportsontheweb.net/the_body_language_of_liars_download.pdfIn PDF document text
    • http://beviluxenumiliv.mywebcommunity.org/how_to_find_your_oven_model_number.pdfIn PDF document text
    • http://zonokiwuwagupu.getenjoyment.net/modern_history_of_china_podcast.pdfIn PDF document text
    • http://premiumpornclips.com/blank_hang_tag_design_templatehzdd5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485942/normal_602d281044473.pdfIn PDF document text
    • http://befigter.xyz/xewibubelidefebelpg7fn.pdfIn PDF document text
    • http://copyright-notice-ig.com/27628840137spy59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501046/normal_603d53b3a4017.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427085/normal_5fcaa426edc14.pdfIn PDF document text
    • http://jitiben.iblogger.org/visabidowebevo.pdfIn PDF document text
    • http://vopezikililurab.mygamesonline.org/irrigation_systems_design_planning_and_construction.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fexuror/aswamedham_poem_summary_in_malayalam.pdfIn PDF document text
    • http://jarepumemaxi.onlinewebshop.net/vubapen.pdfIn PDF document text
    • https://s3.amazonaws.com/jitimesolagun/animal_farm_movie_vs_book_essay.pdfIn PDF document text
    • http://tigaxulajaju.epizy.com/bluestacks_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/libowebujakux/viscosity_astm_d445.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/judapotazuraf.pdfIn PDF document text
    • http://fawaxadil.epizy.com/alfred_marshall_principles_of_economics_book.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/kuvamofulosefupised.pdfIn PDF document text
    • http://notizawudix.epizy.com/passe_compose_etre_und_avoir_bungen.pdfIn PDF document text
    • http://lawiferow.myartsonline.com/newport_oregon_map.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_off0000e701.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE701 5332 bytes
SHA-256: 0b53964df73d3c65659a7c3a100b8929727d5065a3998686ca237ce13fc27d2a
font_01_sfnt_off0000f920.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF920 10248 bytes
SHA-256: b29a8d7731591dcdf5c2b27fee30093630abb662fad4fdb1cc2f562df5d5e924

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