Malicious PDF — malware analysis report

Static analysis result for SHA-256 80f331593fb35dda…

MALICIOUS

PDF

79.1 KB Created: 2021-04-15 08:16:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ca41605c235f0a64097119463e1dbd8 SHA-1: 2cd555c83bc90a9456c53eee3cd94464e35641b3 SHA-256: 80f331593fb35ddaf35fde88a686d441a0d1bcb77bc1e4a8d99010d4e0943149
96 Risk Score

Malware Insights

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

The file was detected as a malicious PDF by ClamAV and an ML classifier. It contains an embedded URI pointing to 'https://botokaw.ru/strik?utm_term=what+are+some+hobby+examples', which is a strong indicator of a phishing or malware distribution attempt. The document body is heavily obfuscated, but the presence of external URIs and the high risk score suggest a malicious intent to redirect the user to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://botokaw.ru/strik?utm_term=what+are+some+hobby+examples
    • http://mobutadaxez.medianewsonline.com/lezomapin.pdf
    • http://ourfutures.space/92748415817tszr3.pdf
    • http://juilopkiretlo.ru/71855116375nt5xt.pdf
    • http://zebiripu.mygamesonline.org/accounting_tools_for_business_decision_making.pdf
    • http://liwitesuzemumex.sportsontheweb.net/will_winds_of_winter_be_released_in_2019.pdf
    • http://moscowflowers.online/hisense_portable_air_conditioner_and_heater_reviewz1696.pdf
    • https://cdn-cms.f-static.net/uploads/4416934/normal_605b6c8eb46cf.pdf
    • https://cdn-cms.f-static.net/uploads/4374211/normal_603e55ea557cb.pdf
    • https://static.s123-cdn-static.com/uploads/4418762/normal_5fe3d758a89ef.pdf
    • https://cdn-cms.f-static.net/uploads/4426697/normal_601fd6a2eaa9b.pdf
    • https://cdn-cms.f-static.net/uploads/4454161/normal_5fdb5302b5de4.pdf
    • https://cdn-cms.f-static.net/uploads/4409840/normal_604e74fdc10f7.pdf
    • https://static.s123-cdn-static.com/uploads/4390330/normal_5fc6b25a55ec8.pdf
    • https://static.s123-cdn-static.com/uploads/4382953/normal_5feaf9709f8ed.pdf
    • http://zokugorevat.mywebcommunity.org/do_you_really_need_a_verizon_router_for_fios.pdf
    • http://libertinemodels.com/members_mark_portable_stainless_steel_2-burner_gas_grill_manual105ks.pdf
    • http://nawavidosuk.medianewsonline.com/make_smaller_mac.pdf
    • https://cdn-cms.f-static.net/uploads/4448540/normal_603f31f09ffc1.pdf
    • https://cdn-cms.f-static.net/uploads/4450249/normal_60460fa477157.pdf
    • http://xozonline.ru/digatedosokozafepac0kww.pdf
    • http://life-news.tech/final_fantasy_xv_the_complete_official_guide_collectors_editiondy77r.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://nipelijikiki.onlinewebshop.net/nixalarugonupevafir.pdf
    • http://xezaretidatoro.onlinewebshop.net/70228017300.pdf
    • http://tofilijewok.atwebpages.com/93276068189.pdf
    • http://kuxemozoxabonag.onlinewebshop.net/where_to_get_free_food_melbourne_birthday.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_off0000f8a7.bin
5e7c06a4616b836f437f3fad99470116cd68696bbae58727d6c7ccbec652d581		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF8A7 5384 bytes
font_01_sfnt_off00010ada.bin
2ede4d799200b008698f6301532556a220fb5b1a31091fa20819955c92ff0723		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10ADA 10604 bytes

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