Malicious PDF — malware analysis report

Static analysis result for SHA-256 61aa4f1aad32e380…

MALICIOUS

PDF

82.9 KB Created: 2021-02-01 10:56:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 7e7c862ad62e3323c8f68314117bd318 SHA-1: 10fb4798c4792fedb91dd4349f3afd57b611dcad SHA-256: 61aa4f1aad32e38000c345d63235af219df01c13691cc510c5cef5ce80991be1
154 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious domain, disguised as a search result for a sensitive query. This indicates a phishing attempt to lure users to a malicious site. The ML classifier and ClamAV detection strongly support the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://crophysi.ru/123?utm_term=can+you+get+an+std+from+a+toilet+seat In PDF document text
    • http://ragukir.iblogger.org/kudupumobukemujujap.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://temomuduzuba.epizy.com/98663340831.pdfIn PDF document text
    • http://mapitixonemo.epizy.com/xamixofotorutamakoret.pdfIn PDF document text
    • http://zilomit.epizy.com/kajejop.pdfIn PDF document text
    • https://s3.amazonaws.com/pipaneku/ai_real_estate_brochure_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezux/vowofowurulemafopazumisut.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/23591946697.pdfIn PDF document text
    • https://s3.amazonaws.com/kitakilesa/o_level_chemistry_notes_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/10245149191.pdfIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/nefiromevetewemumu.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/tamil_movie_2019_website.pdfIn PDF document text
    • https://s3.amazonaws.com/tinivukedeta/endpoint_security_gartner_report.pdfIn PDF document text
    • http://pelewonaxiguso.epizy.com/zebawavim.pdfIn PDF document text
    • https://s3.amazonaws.com/jutenojamega/magazine_layout_design_principles.pdfIn PDF document text
    • https://s3.amazonaws.com/vawoginele/66159968447.pdfIn PDF document text
    • http://zalezir.epizy.com/bojemilolilegiwe.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/kerinalakaxogugime.pdfIn PDF document text
    • https://s3.amazonaws.com/wajibile/nufiduziwogup.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/faninuzuzebowej.pdfIn PDF document text
    • http://zexukojol.rf.gd/criticize_noun_form.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_off00010512.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10512 5236 bytes
SHA-256: c11d226351c02241bdef181e3fd5b0e71728f8c6dd1095d8bd55496fdf2a08ab
font_01_sfnt_off000116d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116D2 11416 bytes
SHA-256: dfb1e9e7e820db667dc8e0f8a175a3ecfa552764556c1bfbde43a91811caf13c

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