Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3b17ba02941e861…

MALICIOUS

PDF

73.0 KB Created: 2021-02-27 10:44:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 40e52aa34ceeee112bdadcba83cb6286 SHA-1: 77f2e10834c4a3ab4c48081206e40e265a7ae05e SHA-256: b3b17ba02941e8616d31bfb12e6d1af8e273f6b052c92194cfb0bfcbdc78e71c
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://mezovuduw.ru/wix?keyword=top+wifi+hacking+apps+apk PDF link annotation
    • https://cdn.sqhk.co/libudezetuv/7hccghM/decode_duo_codenames_duet_online_locals.pdfIn PDF document text
    • https://cdn.sqhk.co/pedidagow/PjfyjiB/does_working_out_make_your_voice_deeper.pdfIn PDF document text
    • http://paxezot.getenjoyment.net/toshiba_ct-90325_tv_bluetooth.pdfIn PDF document text
    • http://gojavodevagajuw.mygamesonline.org/hp_deskjet_9800.pdfIn PDF document text
    • http://pogawubujogeje.mypressonline.com/madame_butterfly_book.pdfIn PDF document text
    • http://my-favshopd.online/97157496264fohcf.pdfIn PDF document text
    • https://cdn.sqhk.co/reruzemafow/N8zgiAd/88396466095.pdfIn PDF document text
    • https://lowunidedalovel.weebly.com/uploads/1/3/1/3/131380213/budetalulugizup-zagefurizedo-puvixonisur-tuxudewa.pdfIn PDF document text
    • https://cdn.sqhk.co/kewesowovim/bvvhcgh/vodawoxigamarenaroturidob.pdfIn PDF document text
    • http://fidofawi.medianewsonline.com/68608301092.pdfIn PDF document text
    • https://jefabogab.weebly.com/uploads/1/3/1/6/131636769/gewebewubimi.pdfIn PDF document text
    • http://gamukanemafutu.mywebcommunity.org/maths_worksheets_for_7_year_olds.pdfIn PDF document text
    • http://xuwuvewisin.mypressonline.com/what_is_the_main_difference_between_an_llc_and_a_corporation.pdfIn PDF document text
    • http://bafiselavanebep.mywebcommunity.org/ligukapefol.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwefuxab/hdiKBgf/paxugi.pdfIn PDF document text
    • https://jabevemejo.weebly.com/uploads/1/3/1/4/131483275/gegifak_rofulusukefi_lilowogewofimar_sazogojej.pdfIn PDF document text
    • https://ragurukenawuxif.weebly.com/uploads/1/3/4/6/134667210/tudem_rafojinezaf_vibigi.pdfIn PDF document text
    • https://geripefuni.weebly.com/uploads/1/3/2/7/132740274/sigozibiwapuda-fazopalotib-sefutu.pdfIn PDF document text
    • https://toxoladosa.weebly.com/uploads/1/3/4/4/134479392/sadujoxav_fotorab_jedofumaximux_nivomap.pdfIn PDF document text
    • http://uscreditmonitoring.info/one_clue_crossword_sailing_answerse4j0y.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e1aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1AA 5252 bytes
SHA-256: bd00eff7777500b9399dd61c6627f44d149e0b34306be52f25c65b0c6c040b4b
font_01_sfnt_off0000f3a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3A7 10368 bytes
SHA-256: 539b0d90e63c0acea678a0f31f3ed8ac0f2976014b34b23fcfaebaa9ed9d8b14

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