Malicious PDF — malware analysis report

Static analysis result for SHA-256 615d29da81a748e8…

MALICIOUS

PDF

82.4 KB Created: 2021-03-27 15:36:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: cc02b45cca965a21e34559602983ebcd SHA-1: 56c5b525322744554006403c35342a0880ad0bd2 SHA-256: 615d29da81a748e874097a19e9409290d1576d174e1d5b50ff11a7310ea1dedc
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 0.9996

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://jacksth.ru/strik?utm_term=why+is+my+hp+officejet+printer+not+printing+in+color PDF link annotation
    • http://nekidifuton.medianewsonline.com/textbook_of_medical_biochemistry_free_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488810/normal_5ff40bf922418.pdfIn PDF document text
    • https://cdn.sqhk.co/puzadowoke/nfXZic3/logo_game_tv_channels_1_answers.pdfIn PDF document text
    • http://midikakuvekume.mywebcommunity.org/noventa_poemas_ultimos_fernando_pessoa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427795/normal_6038c3d4a5fd3.pdfIn PDF document text
    • http://movizopolu.medianewsonline.com/3278647350.pdfIn PDF document text
    • https://cdn.sqhk.co/jotepomi/jdgfhes/lewunevenito.pdfIn PDF document text
    • https://cdn.sqhk.co/xogodapap/ajdjiif/vawojejizukolesegekevejeb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417809/normal_604e1627a7782.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405925/normal_5fd68b1a1af10.pdfIn PDF document text
    • https://cdn.sqhk.co/vefemonuru/d3hfzgd/sonofusakabek.pdfIn PDF document text
    • https://cdn.sqhk.co/julukimesof/2jigjrZ/23245985495.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493876/normal_6049c946e5f82.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383327/normal_5fee1337ac448.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406228/normal_5fd29dec5b9bc.pdfIn PDF document text
    • https://cdn.sqhk.co/rijomawonuj/gjyI7hb/82899855140.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413226/normal_60239d3890d28.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500887/normal_604195c9de573.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414849/normal_60011517c6fba.pdfIn PDF document text
    • https://cdn.sqhk.co/ketadasogob/jfjdAhh/kivirepejobagetikusaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482636/normal_605441e204314.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494433/normal_5fe643f0ee5b1.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_off00010403.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10403 5408 bytes
SHA-256: 6dac1128c1f5498a8e6dea4574cefcee1c5d20fc4f870d6d070174d4301809c1
font_01_sfnt_off00011663.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11663 10892 bytes
SHA-256: bdb41ec498c4d62735a50d2a0e3ba38f507d310c2b36f567a6bb61138eab1420

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