Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8ec509234a8174e…

MALICIOUS

PDF

78.5 KB Created: 2021-04-19 12:05:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: e906002fb2f5535b4db9065e936e7eed SHA-1: 5a5097f334f621f46e9a8058d8bb20727096a75d SHA-256: b8ec509234a8174e3cc71b8f725cb9ead667913f32eb1af714aef9f141b6ca2a
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI that directs users to a URL disguised as a search result, likely to trick them into visiting a malicious site. No scripts were extracted, but the PDF structure and embedded URI strongly suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gimoguvi.ru/strik?utm_term=can+you+use+pivot+tables+in+google+sheets PDF link annotation
    • https://cdn.sqhk.co/bisidilit/eSBgdli/clash_of_three_kingdoms_bot_for_facebook.pdfIn PDF document text
    • https://cdn.sqhk.co/fotenulutis/DhciguL/buy_and_sell_facebook_marketplace_longview_tx.pdfIn PDF document text
    • https://cdn.sqhk.co/ridijafugemi/jcicfgg/kermit_nail_biting_gif.pdfIn PDF document text
    • https://cdn.sqhk.co/wujozuzewed/hJczjhP/alina_baraz_can_i.pdfIn PDF document text
    • https://cdn.sqhk.co/nolagutotato/44hd5gh/sputnik_v_stock_name.pdfIn PDF document text
    • http://rolutaxab.22web.org/orbit_sprinkler_valve_operation.pdfIn PDF document text
    • https://cdn.sqhk.co/jotenitix/Zaghgds/ponoxi.pdfIn PDF document text
    • https://cdn.sqhk.co/dixobiwi/TN6giic/21753517414.pdfIn PDF document text
    • https://cdn.sqhk.co/parikozug/9jijcck/dobelubisoloxowuxi.pdfIn PDF document text
    • https://cdn.sqhk.co/nomitusibop/fLhhbg0/29091983510.pdfIn PDF document text
    • https://cdn.sqhk.co/gatezoru/ii3iajf/best_games_of_2020_so_far_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/xuzuvazol/hiYhcbm/bare_knuckle_fight_tonight.pdfIn PDF document text
    • https://cdn.sqhk.co/safubuguva/jsignu5/patugid.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/tutasujal/how_to_charge_a_brookstone_speaker.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/happy_birthday_wishes_in_english_images.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/48545541748.pdfIn PDF document text
    • https://s3.amazonaws.com/zetituri/how_do_you_troubleshoot_a_microwave.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/wekodewajonelomavi.pdfIn PDF document text
    • https://s3.amazonaws.com/remavuj/tugiboruwanegiworesuwov.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/49618554034.pdfIn PDF document text
    • https://s3.amazonaws.com/wegugus/the_most_popular_song_on_youtube_2019.pdfIn PDF document text
    • http://zitilola.rf.gd/lavituwikiwotut.pdfIn PDF document text
    • https://s3.amazonaws.com/dosalapasenow/jeepers_creepers_4_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/chino-_e_telephone_manual.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_off0000f4b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4B7 5192 bytes
SHA-256: 48a7ec31444779da525509ef6723ef5e993b683b0d8abb33f29915658c47f80c
font_01_sfnt_off00010669.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10669 10880 bytes
SHA-256: 4a48be1c90c078569bb687506f30e0ecf40023ed709f789e5246ac1aa5ab842c

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