Malicious PDF — malware analysis report

Static analysis result for SHA-256 e714b2f3f514be89…

MALICIOUS

PDF

70.7 KB Created: 2021-01-30 21:51:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 3147bfb64b63f8104f5cdcd663ff0fce SHA-1: 3aad4ca0a088385fcec3e7f9a90015257a58e9f1 SHA-256: e714b2f3f514be898bc230c8194a085790233a601202eb6ecc5860755b7250e0
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URL that is presented as content related to a popular manga, likely to trick the user into clicking it. While no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest it's designed to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/wb?keyword=new%20berserk%20chapter%20363 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4424376/normal_5ff0c57b6cdc0.pdfIn PDF document text
    • http://idealica-italiauficiale.website/makkar_ielts_speaking_cue_cards_download52ydc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470542/normal_6007155d6646d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424637/normal_5ff8a37e81512.pdfIn PDF document text
    • https://vezitiratad.weebly.com/uploads/1/3/1/8/131856143/nojezow_bigen_towubu_zewezobixutiv.pdfIn PDF document text
    • https://marikikugawu.weebly.com/uploads/1/3/5/3/135326377/wulafewisapuneravetu.pdfIn PDF document text
    • https://cdn.sqhk.co/wesifarajaru/hj8E1ii/solitaire_domino_games_rules.pdfIn PDF document text
    • http://jumofusifabezol.66ghz.com/xugukejezilexisubenado.pdfIn PDF document text
    • https://cdn.sqhk.co/jevamivuvugi/jiZlmqB/48287267209.pdfIn PDF document text
    • https://bibatajikoxego.weebly.com/uploads/1/3/5/3/135315017/025c1.pdfIn PDF document text
    • http://dezlice.ru/mavekulok7mbn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392660/normal_600caa000c1f4.pdfIn PDF document text
    • http://pmaider.com/66924416128dmx85.pdfIn PDF document text
    • http://nibatuw.iblogger.org/the_barefoot_investor_book_free.pdfIn PDF document text
    • https://cdn.sqhk.co/puzadowoke/llFhhZl/big_rig_racing_game_gift_code.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500183/normal_5ff7f372de70a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://beverotunege.epizy.com/singh_is_king_title_song_video.pdfIn PDF document text
    • https://s3.amazonaws.com/juzewojavomofew/bismarcksche_reichsverfassung.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/razutigibaxejes.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_off0000d6bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6BF 5572 bytes
SHA-256: 71d8074d1fd3455196bff7b1a8188c208d6fa0990e15691df8f371b16ab9e5fa
font_01_sfnt_off0000e9c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9C0 10660 bytes
SHA-256: e31b78bb4c39f14ff2e8ba3f95394162f6361fee8f7fa3c3dcb35de5262fa3b1

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