Malicious PDF — malware analysis report

Static analysis result for SHA-256 d74255688d324450…

MALICIOUS

PDF

78.1 KB Created: 2021-03-25 03:31:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fab05f0ee55e95bef06dabd7db9ec8c3 SHA-1: 77b1822fb43d102ec4c3894f76ac26a13bfc1b57 SHA-256: d74255688d32445067075f841f7659265e1600ef05428915d2f074dfeb30188c
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URI that points to a suspicious domain, likely intended to deliver a malicious payload or lead to a phishing site. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into navigating to a potentially harmful external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://leonvi.ru/award?keyword=technical+drawing+pdf+books
    • https://ziduxibuzogegu.weebly.com/uploads/1/3/4/0/134012824/1397099.pdf
    • http://55571.ru/34573295583ayjvi.pdf
    • http://wopebexe.66ghz.com/79286207302.pdf
    • https://cdn-cms.f-static.net/uploads/4466146/normal_602c8bc5aaa53.pdf
    • http://copyright-supporthelp.com/harpoon_lagoon_jellyfishh6ov0.pdf
    • https://cdn-cms.f-static.net/uploads/4405895/normal_603acfcfc6a0d.pdf
    • https://vufizirisabewi.weebly.com/uploads/1/3/4/4/134443644/komerejapiku-nubegodofateroz.pdf
    • https://cdn-cms.f-static.net/uploads/4373755/normal_604496b62938d.pdf
    • https://cdn-cms.f-static.net/uploads/4472206/normal_6052a8cbf0750.pdf
    • https://femixazate.weebly.com/uploads/1/3/4/3/134363246/a412c70be1.pdf
    • http://fusagawi.iblogger.org/dizuzipizipadules.pdf
    • http://tdsevsvet.ru/names_of_harry_potter_movies_from_first_to_lastu0gb1.pdf
    • http://talkme-news.info/how_to_update_maximus_viii_hero_bios0cyko.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://451b78f8-089e-4d4d-bc4b-60abb621f7e6.filesusr.com/ugd/7ef0dc_a8b86f20e2ba4e6ea9479345ed7f54f7.pdf?index=true
    • http://bobujosu.epizy.com/property_market_report_indonesia.pdf
    • http://mesobuze.epizy.com/kuliwoxafelixufu.pdf
    • https://254a6a59-343e-4b7e-907c-c4819e171fff.filesusr.com/ugd/decf6f_a2911c0170564860919a3a8596333a9b.pdf?index=true
    • https://5057b38b-f250-4925-a5fd-2dbc054a2c1f.filesusr.com/ugd/25ee37_c2317092f6864fb8803a7bbbfd5ea5b1.pdf?index=true
    • http://zudosikewemer.epizy.com/22988125833.pdf
    • https://ff536187-e25a-4bd2-965b-ff1113cf40b0.filesusr.com/ugd/bfcccc_32fc912e94a84b5faa27aef1e5a5c1e2.pdf?index=true
    • https://2f60c0de-bae8-48d8-8f3f-ce7907f87c52.filesusr.com/ugd/badafb_2843146b9f8b4c92b09ad0fd62648eac.pdf?index=true
    • http://sokevojufepizi.rf.gd/bocasalina_formentera_ristorante.pdf
    • http://tijeluko.rf.gd/east_africa_travel_guide.pdf
    • http://mewuxugeje.epizy.com/interior_design_ideas_free_download.pdf
    • http://fovuderes.rf.gd/will_colleges_reopen_in_january_2021_uk.pdf
    • http://marilineme.epizy.com/personal_finance_balance_sheet.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_off0000f351.bin
9f410433f231a6411db71f85a76ceb6153719895be01136e0651a2772b83b240		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF351 5660 bytes
font_01_sfnt_off0001069e.bin
e653947235cbbb44b047f26147d881325f26419b4ebffa616968e0cd0d4d1611		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1069E 10636 bytes

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