Malicious PDF — malware analysis report

Static analysis result for SHA-256 744e82a821f260d5…

MALICIOUS

PDF

70.6 KB Created: 2021-03-03 03:20:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1003eee17abdb639a44858019a4e023a SHA-1: 29c8573ca4b3c45a3d8e73b3226d4f3c6b5f048c SHA-256: 744e82a821f260d538e3b8a6cdbbac307770ff00d617b1a7dba7b3661e3c4b74
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://xajibur.ru/wix?keyword=vocab+level+f+unit+9+synonyms+answers PDF link annotation
    • https://winomumamo.weebly.com/uploads/1/3/1/0/131070375/xuvutuwelariro.pdfIn PDF document text
    • https://xolesozetenosox.weebly.com/uploads/1/3/1/0/131070434/boxubuzapol.pdfIn PDF document text
    • http://mofizikozi.22web.org/bgt_ashleigh_and_pudsey_all_performances.pdfIn PDF document text
    • http://gexopidikimo.mygamesonline.org/do_navy_officers_get_reenlistment_bonuses.pdfIn PDF document text
    • http://saxumoru.iblogger.org/dimomiselasewinajenibaj.pdfIn PDF document text
    • https://buvawaxeve.weebly.com/uploads/1/3/0/8/130874113/3e145dc935d01.pdfIn PDF document text
    • https://gasimela.weebly.com/uploads/1/3/1/3/131398285/4854513.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409255/normal_5fd8180f2f148.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490376/normal_60164ef5b5232.pdfIn PDF document text
    • https://vadanidubaseb.weebly.com/uploads/1/3/6/0/136089859/wofedivubuk.pdfIn PDF document text
    • https://bapoxaluw.weebly.com/uploads/1/3/4/7/134717037/dfd47736.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465705/normal_6015c53246712.pdfIn PDF document text
    • http://pedugubugof.mywebcommunity.org/percy_jackson_and_the_lightning_thief_cast_list.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379837/normal_5ff5644bd4dbc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446388/normal_5fe5809b59674.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374519/normal_5fee38cedf4c3.pdfIn PDF document text
    • http://jafoxidulez.mypressonline.com/meaning_of_the_phrase_in_a_split_second.pdfIn PDF document text
    • https://zorutamazu.weebly.com/uploads/1/3/4/0/134096431/gasiva_keminamaru_xonaze.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://riwugiboturom.epizy.com/toy_defense_3_apk.pdfIn PDF document text
    • http://razivud.epizy.com/72377457602.pdfIn PDF document text
    • http://wutejaxevewef.myartsonline.com/dexofawijebegukuramuwu.pdfIn 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_off0000d7ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7EC 5544 bytes
SHA-256: ffb279464b314c0e1059d72dac6c428221012dc25235ad49471283d0c7ac16ab
font_01_sfnt_off0000ead1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAD1 9900 bytes
SHA-256: 0846eaabf7b500997a1f8a2515621ee385155f245788b46251fbcae45a33719c