Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1341f1cf0918574…

MALICIOUS

PDF

78.2 KB Created: 2021-03-24 17:05:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 6cab118fd2396e7f912c158915390ac8 SHA-1: eba9b145e2a723381acf98902003b074149dc3ed SHA-256: c1341f1cf0918574624bfd9db5ab4362a0ca4badd44e5a82b96204207c990881
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, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further confirm its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content, likely for phishing or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://dugedepap.ru/123?utm_term=information+technology+viva+questions+and+answers+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4424682/normal_5fcda219cd9a4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485010/normal_5fc6746ad4f89.pdfIn PDF document text
    • http://wulodab.iblogger.org/dobepiniragononurimul.pdfIn PDF document text
    • http://wordsideget.top/raise_your_glass_song_lyricsv2cqi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478134/normal_5fce183d3cb80.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496381/normal_60079ac48fa62.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402740/normal_5fe2112a89f62.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491432/normal_5fde822cc7802.pdfIn PDF document text
    • http://guwelureg.22web.org/advanced_excel_tutorial_bangla.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500667/normal_603e6581a7221.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449014/normal_6045f2a0ea89d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481055/normal_5ff37b328a46a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470523/normal_5fdd59c4741ab.pdfIn PDF document text
    • http://morpeoplelife.ru/havoc_brothers_audio_song_freel9psh.pdfIn PDF document text
    • https://cdn.sqhk.co/geruxibab/KR5jgBm/top_photography_hashtags_for_instagram_2020.pdfIn PDF document text
    • http://copyrightsupporteds.com/avengers_endgame_full_scriptxg9sk.pdfIn PDF document text
    • https://cdn.sqhk.co/vivijuzajus/bK77Vie/jumping_ninja_party_2_player_games.pdfIn PDF document text
    • http://reduslimitalia-oficial.site/how_to_share_a_word_document_on_fbihowo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413225/normal_602d487e5f542.pdfIn PDF document text
    • https://cdn.sqhk.co/fadejiweruw/OBhh7hb/car_crash_death_statistics_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/vofemolat/aRhfSjh/lesson_plan_template_printable.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375195/normal_5ffea48ac6546.pdfIn PDF document text
    • http://o-karte-kopilka.com/5363059248khdv7.pdfIn PDF document text
    • https://cdn.sqhk.co/gezefesete/aXjbyjg/11973737161.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zedakukabizo.epizy.com/roxisodunugofoguzotopes.pdfIn PDF document text
    • http://xonukekavufimil.epizy.com/hospital_infection_control_risk_assessment_template.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_off0000f0eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0EB 5884 bytes
SHA-256: 1416504df77ed5b9d700f69a70b74d6fde6c1eafe249e4bd78bd57715db14df3
font_01_sfnt_off000104e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104E2 10584 bytes
SHA-256: a2a156e7f3acc64d2d74861bf040016ec3dd580c5b0b6a032b6dd6f19a82d001

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