Malicious PDF — malware analysis report

Static analysis result for SHA-256 09762ae1c8ff77c1…

MALICIOUS

PDF

72.3 KB Created: 2021-02-18 19:53:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: a04a26c8e3a277db3a2221f430d7bde9 SHA-1: 33a509bc574a8ff52f5f1780df931b1bd07dba6b SHA-256: 09762ae1c8ff77c19793717da86df0552ff7698ce3ef789f6684e372a7820c18
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, indicating an attempt to lead the user to a harmful destination. The ML classifier and ClamAV detection strongly support its malicious nature. The embedded URLs suggest a phishing or malware distribution scheme, likely initiated via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/wix?keyword=always+let+your+conscience+be+your+guide+tattoo In PDF document text
    • http://ejinaya.com/crash_test_dummies_mmm_meme1d5os.pdfIn PDF document text
    • http://myshoes.moscow/avis_sur_le_centre_de_formation_europeny8f69.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445557/normal_5fde3e475ffbb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417403/normal_601eba40ab99d.pdfIn PDF document text
    • http://testrun.ru/gajunajifemizowobo9fgnm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449793/normal_5fcd6ac273958.pdfIn PDF document text
    • http://llloooodddd.space/261272802177j1vb.pdfIn PDF document text
    • http://girlsbeach.space/pid_diagram_symbols_dwg2phqh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409811/normal_5fee1d1713791.pdfIn PDF document text
    • http://bas-vorota.ru/wolfteam_suriye_indirttazx.pdfIn PDF document text
    • http://normal-id.com/rough_guide_portugal_things_not_to_misslz9k5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481409/normal_5fca28c2d4744.pdfIn PDF document text
    • http://healthyforczechrepublic.site/wuvovukixezegifizipaj0efm7.pdfIn PDF document text
    • http://lnstgramhelpcopyright.com/506845993183zkia.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500878/normal_5fe2dfb60419d.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/fejififimaketo/85385237103.pdfIn PDF document text
    • https://s3.amazonaws.com/mefovu/tiliz.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromisixinolib/animal_habitats_worksheet_ks1.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/neutralizacion_acido_base.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/dasopanumaliromiken.pdfIn PDF document text
    • https://s3.amazonaws.com/labitajaxatufib/dulowunevulo.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_off0000dcc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCC9 5432 bytes
SHA-256: 64ff590ceff41aa5694f367c68bcaed7c861a9161f054bc933c5b42373dd3275
font_01_sfnt_off0000ef65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF65 10628 bytes
SHA-256: 321f00c268e9f5c67669f2c6a28326d26d3f1d9d97471284fc35efa150eedbb0

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