Malicious PDF — malware analysis report

Static analysis result for SHA-256 f492fbaa6f32f7cd…

MALICIOUS

PDF

68.0 KB Created: 2021-03-15 09:25:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a5f881b4f24420f073dcd202b11f965 SHA-1: 723cb5b38fccb6bb8c4570898d8710110221769a SHA-256: f492fbaa6f32f7cd701f35bc7c0a875397acdf9e108b62c2a537471cde1876ee
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a phishing site. The PDF structure and embedded artifacts suggest it's designed to exploit PDF vulnerabilities or trick users into interacting with malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://druttle.ru/wix?keyword=informs+annual+meeting+2020
    • https://cdn.sqhk.co/xomatujod/IieiaHs/81547440619.pdf
    • https://cdn.sqhk.co/nosimasiv/wOspcjf/sticker_maker_app_for_whatsapp_download.pdf
    • https://cdn.sqhk.co/gufuluzibos/2Xyjjic/help_pics_word_game_mechanics.pdf
    • https://cdn.sqhk.co/xusorawoka/aPhiifD/merchant_services_intuit.pdf
    • https://cdn.sqhk.co/rorezina/AIijafi/mifotogokasanudewu.pdf
    • https://cdn.sqhk.co/furabafezuse/dXjc0gf/rifasorusekivojufetaf.pdf
    • http://bapatavusirave.mygamesonline.org/69177788209.pdf
    • https://cdn.sqhk.co/ripalufix/iwgjgeJ/batman_joker_comics.pdf
    • http://gojawufeki.getenjoyment.net/30983754273.pdf
    • https://cdn.sqhk.co/wufaluvete/iiglhc6/lonimekevuderilopi.pdf
    • https://cdn.sqhk.co/linewebozid/igjhfhk/89627162067.pdf
    • https://cdn.sqhk.co/wuwoxegolewa/jdphghi/chinese_kung_fu_meditation_music.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b2a7985d-64e0-4c21-95a6-fb14c6bbbc24/84805804975.pdf
    • https://uploads.strikinglycdn.com/files/ac840d52-a059-43af-b0f6-070b1a72d584/59017386511.pdf
    • https://uploads.strikinglycdn.com/files/d7bf52b9-6325-4220-ab77-6ad859f26108/how_do_i_identify_a_ford_ranger_transmission.pdf
    • https://uploads.strikinglycdn.com/files/60cad94f-8209-4784-af9c-a939feb0f2d5/knock_em_dead_resumes_website.pdf
    • https://uploads.strikinglycdn.com/files/b438a705-6b42-48f0-bc97-abd1badb0b68/natutetofatim.pdf
    • https://uploads.strikinglycdn.com/files/8d59dd24-e710-43c4-b369-7caf09772cc2/30537041017.pdf
    • https://s3.amazonaws.com/wamatasamegu/sised.pdf
    • http://bebojivim.myartsonline.com/gibob.pdf
    • https://uploads.strikinglycdn.com/files/77dcb960-c294-4006-9332-a3baacffd5ca/fetajopese.pdf
    • http://muwuvago.atwebpages.com/satopebu.pdf
    • https://s3.amazonaws.com/kujesulad/86894609185.pdf
    • https://uploads.strikinglycdn.com/files/1ae3f160-c150-4c1a-8bed-d83cd296693e/how_to_connect_echo_dot_2nd_gen_to_wifi.pdf
    • http://gakajitaju.atwebpages.com/60616055941.pdf
    • https://uploads.strikinglycdn.com/files/c8675a6f-9aaa-4db4-9a12-4c5baa3848b7/behind_closed_doors_a_true_story_of_abuse_neglect_and_survival_against_the_odds.pdf
    • https://s3.amazonaws.com/wejuvono/how_to_calculate_pressure_from_manometer_reading.pdf
    • https://s3.amazonaws.com/zunaporam/lapetati.pdf
    • https://s3.amazonaws.com/padadutiseni/tulanibum.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d166.bin
bedbe3e336717a2ccecb38142211d9e592822db9d4e21604ba0a875242e81440		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD166 5296 bytes
font_01_sfnt_off0000e352.bin
e0e3863b36dfc15ea7f22ec5e0d3e930e81a66597fd40d0f8ef6ec7dc6b3a845		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE352 9148 bytes

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