Malicious PDF — malware analysis report

Static analysis result for SHA-256 96ed8f2543ce9be9…

MALICIOUS

PDF

70.7 KB Created: 2020-11-20 14:21:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 3c031eb034372d7c870a33a207785528 SHA-1: 6d3a1d964ffcaf5b70ef4e4694db18fa69a31756 SHA-256: 96ed8f2543ce9be93e9b38cc40870e74404e64135c0f72a61b46dd0c26cb6150
156 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 a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://trafffi.ru/123?utm_term=memory+jogger+for+network+marketing PDF link annotation
    • https://derigibi.weebly.com/uploads/1/3/4/4/134447264/3745366.pdfIn PDF document text
    • https://goduvozimaku.weebly.com/uploads/1/3/1/3/131380582/vakobotol-suvuw-rasujomuguguk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465557/normal_5fb2ed684d95d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474170/normal_5fa95c42bdaaf.pdfIn PDF document text
    • https://tibuzitapafik.weebly.com/uploads/1/3/4/7/134703037/jinake-dadizagotapo-gadukeso.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/f164c76a-95c4-42e8-8353-88a7327db0cd/57285118138.pdfIn PDF document text
    • https://s3.amazonaws.com/jepavilutabilel/50304078810.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8036c317-8553-46bc-859b-3e53d7f71c07/alfabeto_movil_para_imprimir_gratis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8da6c65d-0ce0-4a36-b1ea-af8a3fe9bbed/tegadimakojolijofu.pdfIn PDF document text
    • https://s3.amazonaws.com/poresi/excel_log_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e0bee12-475c-441e-ac13-a9a1daf69540/guvajepikusanokavakaki.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/free_10x10_shed_plans.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxuledo/28357818143.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/t_shirt_order_form_template.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/ambulance_driver_handbook_california.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB5C 5004 bytes
SHA-256: c4a0189db8958039d48158e0a4ff80545787c048df5e66d1f13a7692fb47bf4a
font_01_sfnt_off0000dc6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC6D 10476 bytes
SHA-256: a5f811bacbba6f78617af308d99b4560cfb76de033c2405976860e9b0071f933
font_02_sfnt_off0000ffd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFD0 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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