Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ae015bad2811b83…

MALICIOUS

PDF

77.2 KB Created: 2021-01-31 21:32:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: ab4b30854cb2246cd190bc5a051cbabc SHA-1: c5fa0dab389fffb5e3970d1bef48a4bf284dc371 SHA-256: 6ae015bad2811b831efd79f6db39b2d5ba460e41917b59826945774aba4c4a62
214 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics, including a critical alert for linking to known malicious redirector infrastructure and a high ML score. The document contains a large number of embedded URLs, many of which point to suspicious domains, suggesting a link farm designed to redirect users to malicious content. The ClamAV detection further confirms its malicious nature, identifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/123?utm_term=sweet+and+awesome+minecraft+jar In PDF document text
    • http://itrom.fun/16322054889jnqux.pdfIn PDF document text
    • https://cdn.sqhk.co/videgogaf/jhfhfia/games_online_free_no_download_unblocked.pdfIn PDF document text
    • http://supermagazforsale1.xyz/lijutuzuraniraxagokops8ecx.pdfIn PDF document text
    • https://vegipojefatelon.weebly.com/uploads/1/3/4/8/134876486/safazevubexut.pdfIn PDF document text
    • https://madajeguruxe.weebly.com/uploads/1/3/4/3/134348767/tumajovofogiki.pdfIn PDF document text
    • https://kuzogirig.weebly.com/uploads/1/3/4/7/134748708/f0505e82.pdfIn PDF document text
    • https://dojixevagix.weebly.com/uploads/1/3/2/6/132682303/mupudupakova.pdfIn PDF document text
    • http://aycotoro7.xyz/nowidumuditemevoex4z3.pdfIn PDF document text
    • https://ralufuluwifo.weebly.com/uploads/1/3/0/9/130969066/8f4d5a.pdfIn PDF document text
    • https://pufenenuboz.weebly.com/uploads/1/3/0/7/130738511/mimijubuforaza.pdfIn PDF document text
    • http://savadaqwe.space/boss_katana_50_manualx5eui.pdfIn PDF document text
    • https://tixiteto.weebly.com/uploads/1/3/5/2/135295688/5237872.pdfIn PDF document text
    • http://leopards.space/bubble_witch_3_saga_apk_free_downloadtl7e3.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/lerezazo/manual_for_chamberlain_whisper_drive_plus.pdfIn PDF document text
    • https://s3.amazonaws.com/sixenogafopoj/frozen_fever_full_movie_in_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/35754229102.pdfIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/heise_notepad_portable.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/10230917194.pdfIn PDF document text
    • https://s3.amazonaws.com/tenunud/indian_software_company_profile.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/51724316861.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/9052912496.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/herbalism_profession_guide_classic.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_off0000f0ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0AB 5404 bytes
SHA-256: 13443204908f1b6d9dcd5900761a6130d504edd838bbc20204338473b3ae72e6
font_01_sfnt_off0001030b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1030B 10684 bytes
SHA-256: 6650da1c70dc363a0bd970cb6ec0d55028165dafb20319678614d166c402562a

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