Malicious PDF — malware analysis report

Static analysis result for SHA-256 3241e472d1f7a3ba…

MALICIOUS

PDF

84.8 KB Created: 2021-03-14 07:18:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: c2640edae8ff182377ab5d0106bd7891 SHA-1: 84567f6cee37eebc3707daa57751ab36738619b1 SHA-256: 3241e472d1f7a3ba370e3ac72198b910ab31e4796dd6d583d544f2c18f90e8fe
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The ML classifier and ClamAV also flagged this PDF as malicious. The embedded URL leads to a site that likely hosts a phishing or malware payload, disguised as a book download. No scripts were extracted, but the presence of malicious links and high detection scores indicate a phishing attempt.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/strik?utm_term=libro+como+ganar+amigos+e+influenciar+sobre+las+personas+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4404990/normal_6041978a20305.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490524/normal_5ff9e984a44c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443823/normal_60245db90e6fd.pdfIn PDF document text
    • http://hydraruzxpnew4af.exchange/pentagon_with_3_equal_sidesrbiz2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416790/normal_5fc7ea11cf6a5.pdfIn PDF document text
    • http://chambreapp.xyz/cldr_next_earnings_report5nudz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392650/normal_604743a6b2052.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/3fb21989-8c86-4ff5-b30f-397747779cc9/22565602477.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75b407d4-0a2f-4fc8-8bd3-866c3ed4f3fe/acura_rl_transmission.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11bfc267-0ac9-4cee-aa54-255004143ca6/another_word_for_solutions_oriented.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04758304-999f-43e8-97be-818d3bceacea/rosizofalobavesek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/657464b5-123f-4bfc-96f1-0ce588634104/gumeleripesunima.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bedc150-b9a6-473e-a105-877ac44e3fa1/fedex_self_printing_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a1bedee-c859-4351-8046-4366d4172365/22726147772.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/xisuwewusasagupibirataf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11ffec93-891f-443f-a394-840d527d277d/xezofixafewuxewaxureju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d90dbe9c-7c46-4299-abe2-7d6bf050e1d2/elle_decor_media_kit_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50f6c096-a152-4d7d-8d5c-4a1e291f2007/flowers_in_the_attic_movie_story.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53c786ec-f760-43fe-9a68-b45799adfef4/what_tools_are_needed_to_detail_a_car.pdfIn PDF document text
    • https://s3.amazonaws.com/perurulexi/83321487668.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9644c6c2-e54c-4177-b82d-2f3f8a7ac9a6/68092345344.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eace.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEACE 5356 bytes
SHA-256: df0dc7439ce6468306e315ed31f36dc39b4befa5f15f33a4eec9baee58a1977f
font_01_sfnt_off0000fccc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCCC 6080 bytes
SHA-256: 852cda40f30279f67bec69b3b46cb1b0cee5ed52b9f5e1912ae86d034da92883
font_02_sfnt_off00010db3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DB3 12080 bytes
SHA-256: fcd15e239bcfcec69f784f629015d01fa2563530bad2c583ffbbc4a775a3839f
font_03_sfnt_off000134de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134DE 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333