Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1a80797c15705e2…

MALICIOUS

PDF

74.2 KB Created: 2021-02-24 10:32:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: fa5caff9433c4247e1a86526aeb3131a SHA-1: 99ae49419e3a8b0f9044b2b3a9df44e4fbe26988 SHA-256: a1a80797c15705e2386b2ae974258b0615a847274afd8592304337140b6b93e8
154 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, suggests a lure related to "Harry Potter and the philosopher's stone novel pages" to entice users to click the malicious link. The ML classifier and ClamAV detection further support the malicious nature of this file, likely acting as a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/strik?utm_term=harry+potter+and+the+philosopher%2527s+stone+novel+pages In PDF document text
    • http://gixepabu.22web.org/conjunctive_adverbs_list_and_examples.pdfIn PDF document text
    • http://idealicait.site/roman_catholic_bible_in_tamildc42a.pdfIn PDF document text
    • http://tevfikyuce.xyz/vebetoreduvomekowibigqzx5.pdfIn PDF document text
    • http://burrrhey.tech/tarragona_mapa_turistico3vuu1.pdfIn PDF document text
    • http://zumarez.22web.org/miminotegesada.pdfIn PDF document text
    • http://naturalm.space/mififanibezkq6l0.pdfIn PDF document text
    • http://raboleziwuga.iblogger.org/chinese_new_year_song_music_sheet.pdfIn PDF document text
    • http://fasufigige.iblogger.org/7973663898.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/xojafemori/bluebells_of_scotland_trumpet_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/sabegokek/vasabapeluvofafurerej.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/toyota_camry_se_v6_2012_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/juzewojavomofew/6862740926.pdfIn PDF document text
    • https://s3.amazonaws.com/wovigebi/adagio_for_strings_viola_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/sudevejerifu/41048682923.pdfIn PDF document text
    • https://s3.amazonaws.com/bubeto/banunga_me_hafiz_quran_naat.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/3d_seismic_data_acquisition.pdfIn PDF document text
    • http://nuzexev.epizy.com/63182793326.pdfIn PDF document text
    • http://joluvolob.epizy.com/calculo_diferencial_e_integral_2_me_salva.pdfIn PDF document text
    • https://s3.amazonaws.com/poguvelefa/gufoxipanowabilakazewukat.pdfIn PDF document text
    • http://wanigag.rf.gd/rezalanizijizusemibu.pdfIn PDF document text
    • http://wanukunu.epizy.com/8439437474.pdfIn PDF document text
    • https://s3.amazonaws.com/mokixetat/how_to_read_the_bible_for_all_its_worth_online.pdfIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/focusrite_scarlett_2i2_setup_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/piya_basanti_song.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_off0000e498.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE498 5376 bytes
SHA-256: 1392937eb3d16be1b8bdefb32693604142f466d62004df5bc0e801eb5f1bdef7
font_01_sfnt_off0000f6ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6EF 10452 bytes
SHA-256: c1e5189d3bea54130a140ce5561ed2b31c0ca143e47dbd8017796d7ab5f55cf5

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