Malicious PDF — malware analysis report

Static analysis result for SHA-256 34ed760890f86a85…

MALICIOUS

PDF

73.0 KB Created: 2021-04-04 18:40:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c6f87efcb702a4e653579029521ad23e SHA-1: 1f253cec8922ca0048e92d81c9a86b85cde6880d SHA-256: 34ed760890f86a853865e5723e32d18c177c56cf001ec7ec524f0e4aae980658
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 embedded URLs pointing to potentially malicious domains, suggesting it's used to redirect users to phishing or malware download sites. The presence of PDF-specific heuristics further supports its role as a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://golowaki.ru/123?utm_term=name+rahul+image
    • http://lujepejesakila.22web.org/2911319446.pdf
    • http://wonder-ita.space/vijalakurokejomfcpy.pdf
    • http://vkrowl.com/reading_passages_for_toefl_ibt0llyn.pdf
    • http://premiumpornclips.com/fudenigegusawikevimc3ncs.pdf
    • https://cdn.sqhk.co/rosomugimo/jifQjjF/24124275724.pdf
    • https://cdn.sqhk.co/bogulevim/2ifghoT/poopsie_slime_surprise_pets.pdf
    • https://cdn.sqhk.co/jorawuge/ynm2hj8/97323667653.pdf
    • http://wisitens.online/dedavexixibujetawuxixolelkbjz6.pdf
    • https://cdn.sqhk.co/gikokimofegi/idBhdnz/download_my_verizon_app_for_iphone.pdf
    • http://igonlinesupport.com/basic_engineering_drawing_book_downloadhm5qi.pdf
    • http://lojasamericanasbr.com/how_much_do_forensic_investigators_make_in_canadajs5ro.pdf
    • https://cdn.sqhk.co/juwafajem/pia87hg/cephalosporins_2014.pdf
    • http://ridunculus.com/87672054018oxudz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://uploads.strikinglycdn.com/files/a7809082-e0d5-4e59-8a69-0a588b0a1cbf/tugifuxibinunewosalemonu.pdf
    • http://ratazudawi.epizy.com/total_conquest_offline_apk_for_android.pdf
    • https://s3.amazonaws.com/wajufifenoxuj/how_long_do_mini_split_ac_last.pdf
    • https://uploads.strikinglycdn.com/files/1eb7d033-c593-4d79-8396-a6f691e3e92a/how_to_conduct_meetings_during_covid_19.pdf
    • http://didojolo.rf.gd/100_antonyms_words.pdf
    • https://uploads.strikinglycdn.com/files/5fe03318-86b3-48f0-b741-978111f47eee/a_world_of_ideas_in_contemporary_world_ppt.pdf
    • https://s3.amazonaws.com/jizubisetebof/2000_chevy_s10_wiring_diagram.pdf
    • https://uploads.strikinglycdn.com/files/f3b53237-06c1-41ff-9015-2f8c645c423b/best_apollo_audio_interface.pdf
    • http://puzuritutu.rf.gd/describing_trends_vocabulary.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0c1.bin
015db9fb320af2e5dc19aa659508cc611bd4ccd356c6602a3ce16590d84d79ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD0C1 4892 bytes
font_01_sfnt_off0000e13b.bin
b33c7cc891bdc75e7c8369b0352527198dcb507db79b65afb81e24ddb4f0b700		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE13B 10644 bytes
font_02_sfnt_off000105a3.bin
7786398588f930f9955891c68eebe8296c708df0efc4646814d6ba2c589e8c66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105A3 4696 bytes

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