Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7457b8baf9a43bb…

MALICIOUS

PDF

80.3 KB Created: 2021-03-22 03:52:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 512251b4fbff96a72b2e1aba2e0f40cb SHA-1: db166bc2db6d5316446c30b767854ff302e2a2d2 SHA-256: d7457b8baf9a43bba0fce9ed3a2e6133ae0fc19ca82e89c820e10be7e9cab576
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://golowaki.ru/wix?keyword=bianchi+sport+sx+road+bike PDF link annotation
    • http://inertbhjbj.ru/5625009228vsrhy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471479/normal_6022a61542d7b.pdfIn PDF document text
    • http://cosmeteca.com/38227374725c3h84.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374983/normal_5ff4c1b897fa0.pdfIn PDF document text
    • http://getplafond.xyz/emotional_intelligence_2.0_audiobook_mp3h11ug.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366033/normal_5fc9016c56008.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405953/normal_6029b4a161953.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417145/normal_6006cd3d661a8.pdfIn PDF document text
    • http://midunetojonawiw.mywebcommunity.org/what_does_the_term_first_estate_mean.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427544/normal_5fcd51390dcdb.pdfIn PDF document text
    • http://zabolojisag.getenjoyment.net/35833937389.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366308/normal_6016272deb7a1.pdfIn PDF document text
    • http://arevakar-travel.com/kapefejiralivajext79ch.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371247/normal_602578087257a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447251/normal_603f5b9e65575.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503987/normal_5ff32b4b97f27.pdfIn PDF document text
    • http://ramedefinu.getenjoyment.net/lista_de_alimentos_ricos_en_proteinas.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377410/normal_5fcdce41e5ecb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445129/normal_5fec2f97cd149.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wuvepilamamuse/merchant_of_venice_act_1_scene_3_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/dikomavomem/kurtzpel_bringer_of_chaos.pdfIn PDF document text
    • https://s3.amazonaws.com/sizabo/jatemodamisasubapa.pdfIn PDF document text
    • https://s3.amazonaws.com/guvovigo/vexesekopijedorofudetopo.pdfIn PDF document text
    • http://bivojeda.atwebpages.com/agatha_christies_poirot_season_9_episode_1.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_off0000fcb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCB8 5452 bytes
SHA-256: ce1abd34c3804373abddd002b12830613561e1f1568a9a2fc161187ca706118d
font_01_sfnt_off00010f32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F32 10684 bytes
SHA-256: 7ee9400d9383fe0ad8257351522740036fd0a20633ab9fdc0496be42cf13d0a4

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