Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb6f8754202c26ca…

MALICIOUS

PDF

71.0 KB Created: 2021-03-21 01:54:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 9a152f79d88db91f4808d38e12baffea SHA-1: 9c354175275f4987ffa6244b62b620dfd2d5b2d1 SHA-256: cb6f8754202c26cabdc5ddd74f2dbe8819b5e324a8cb99dade3f4a7a5770ea33
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains and link farms, a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious content, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://golowaki.ru/wix?keyword=hamilton+beach+drinkmaster+730c PDF link annotation
    • http://basumoxivor.sportsontheweb.net/41715611466.pdfIn PDF document text
    • http://freshnatur.fun/fureje5dvw.pdfIn PDF document text
    • http://fruitslope.online/kenmore_elite_washer_not_spinning_fast_enoughol0uy.pdfIn PDF document text
    • https://cdn.sqhk.co/divekezor/5iaYjgV/spanish_speaking_countries_and_capitals_worksheet.pdfIn PDF document text
    • http://agent-ritual495.online/los_doce_cuentos_peregrinos_de_gabriel_garcia_marquez2tvp2.pdfIn PDF document text
    • https://cdn.sqhk.co/butituguxur/ghj0Phi/church_on_the_rock_of_chaut_costa.pdfIn PDF document text
    • http://gofidiva.iblogger.org/pulse_oximetry_sensor_datasheet.pdfIn PDF document text
    • http://cafechorsu.ru/1st_grade_lined_writing_paper_template0sbs0.pdfIn PDF document text
    • http://generalmassage.online/9126484443fstgl.pdfIn PDF document text
    • http://copyright-central-media.com/what_is_meant_by_philosophy_of_life_in_tamilg8xko.pdfIn PDF document text
    • http://jaxagogilexet.sportsontheweb.net/the_ripple_effect_book.pdfIn PDF document text
    • https://cdn.sqhk.co/zizenozi/jnidFU2/tasty_words_2_level_6.pdfIn PDF document text
    • http://zenajok.medianewsonline.com/10431349582.pdfIn PDF document text
    • http://praktika-ingenieur.com/pabufemerunetebudezirob2xnon.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/d17f043e-0996-4f59-8591-9ad5c9ebeb49/what_is_the_book_uglies_about.pdfIn PDF document text
    • http://japinoxizidunub.myartsonline.com/17392195874.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0e500a6-428c-4cae-bb1d-12eac8414fa3/how_do_i_run_a_diagnostic_on_my_whirlpool_dishwasher.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba156307-68fc-4dfe-825f-9f9df284ff89/tisexopukofidilubite.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee2bbb26-86d1-44c2-8422-f5949588b455/boots_blood_pressure_monitor_error_codes.pdfIn PDF document text
    • http://kakedujeruvos.epizy.com/bake_shop_game_free.pdfIn PDF document text
    • http://godutiliwaganos.rf.gd/ajooba_movie_all_video_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/302f5c16-c613-4e00-9dfc-39bb20ccc0a3/how_much_is_monique_net_worth.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_off0000d474.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD474 5728 bytes
SHA-256: 2b126d49caeede464719ef939c52c502212bccfeb7d6605e240556c6ac2a8c0b
font_01_sfnt_off0000e7bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7BD 11320 bytes
SHA-256: 7b00105e3fbe9356e239b8dead62f67a7364713a0f9c96fe3f298a6929af7918

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