Malicious PDF — malware analysis report

Static analysis result for SHA-256 785eca60cd13a783…

MALICIOUS

PDF

77.1 KB Created: 2021-04-25 20:18:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dffbc0b24b80b5ab3ed825a0a832c255 SHA-1: dce1966a2788e17b315a3361ba6fd71820d15c1e SHA-256: 785eca60cd13a783e73018e08ac202f1055dff889803f6365dfe0f2b00f756e8
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains embedded URLs, with 'https://xezojetit.ru/strik?utm_term=project+management+mcqs+with+answers+pdf' being a primary indicator of a phishing or malware distribution attempt. The document body, though partially corrupted, suggests a lure related to 'project management mcqs with answers pdf'. No scripts were extracted, but the presence of external URIs points towards a download or redirection mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://xezojetit.ru/strik?utm_term=project+management+mcqs+with+answers+pdf
    • http://vibipigida.22web.org/88947232094.pdf
    • https://cdn-cms.f-static.net/uploads/4415531/normal_606883be5cc4c.pdf
    • https://cdn-cms.f-static.net/uploads/4459937/normal_604b50fb0cd42.pdf
    • http://dovogonusiru.iblogger.org/all_of_me_piano_accompaniment_sheet_music_free.pdf
    • https://dasajusowerav.weebly.com/uploads/1/3/1/6/131637273/8860478.pdf
    • http://sinisegezududas.iblogger.org/harrisons_internal_medicine_latest_edition_download.pdf
    • https://nijasofefovo.weebly.com/uploads/1/3/4/7/134719995/gevumusi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/dubiditiginowo/gapovedifakag.pdf
    • https://uploads.strikinglycdn.com/files/246326d8-5ac9-47eb-81f1-c0a71ba00d45/nibosoxatinajikisavatiki.pdf
    • https://s3.amazonaws.com/suxuzubojut/54083323175.pdf
    • https://uploads.strikinglycdn.com/files/d666ec30-0b00-49d2-a628-e1bc694a79b3/japufodomepitepizodosos.pdf
    • https://s3.amazonaws.com/genedonapubefe/como_pegar_subtitulos_a_un_video_android.pdf
    • http://pavunununege.epizy.com/what_type_of_compound_is_kbr.pdf
    • http://fibalikirikoti.epizy.com/investment_banking_products_and_services.pdf
    • https://uploads.strikinglycdn.com/files/e7a08bc7-a42c-466e-bf53-f49b4abca025/6.5_creedmoor_reloading_data_143_eld_x.pdf
    • http://lifosodutevofa.epizy.com/asm_handbook_vol_1-properties_and_selection_steel.pdf.pdf
    • http://lagawutek.epizy.com/breadman_tr520_manual_en_espaol.pdf
    • https://uploads.strikinglycdn.com/files/14451ed6-8eb5-4c85-989b-241f95ac7395/11102952290.pdf
    • https://uploads.strikinglycdn.com/files/e3120d94-b0cc-4673-ad41-16ef9b3e549e/29783655861.pdf
    • http://nabesazuxipuf.epizy.com/washington_post_crossword_answers.pdf
    • http://kifofok.epizy.com/animal_crossing_new_leaf_roost_coffee_guide.pdf
    • https://s3.amazonaws.com/wenobagupexekap/element_tv_pairing_code_xfinity.pdf
    • https://s3.amazonaws.com/nimuwet/33755328004.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_off0000ef25.bin
b044596c400fa9a5522c3c3c27879179ccc73593d07d7bcfc9ddc27aaceb559f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF25 5832 bytes
font_01_sfnt_off000102dc.bin
f418b21a94b047074e7f18a25b57d61cd7b837dc3ead6c597953edca016fd13d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102DC 10852 bytes

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