Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d0ae93c355793da…

MALICIOUS

PDF

68.5 KB Created: 2020-11-18 15:13:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: f09297136caf6507f97f9fe5ee470700 SHA-1: d74a819c639cd7765c29ff9d6ae2126255c17e7e SHA-256: 2d0ae93c355793da1ca80db8db94cc4144c27998778f3137d53b7c0d9ba614bf
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 0.9997

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
  • 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://traffine.ru/123?utm_term=solar+oven+research PDF link annotation
    • https://xogaketur.weebly.com/uploads/1/3/4/5/134593565/kagepisowodefa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381752/normal_5f9c73cd7f1be.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/49a9414b-75d1-4151-9d91-932c49f7f806/griffiths_quantum_mechanics_online.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/guitar_hero_3_song_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6521e72e-c67e-46a9-a8d8-a2a7a12083b8/mofebatupudofakeweke.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/93893965811.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cca3112-0efc-40bd-95aa-1d4d91cb941d/i_ll_fly_away_tab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad294b1b-1b11-438b-ae35-77921cda1769/1239351196.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/problem_tree_analysis_template_ppt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0978ba51-a898-4e0f-b936-bab2751a8255/kujamujepanovalenisipuzu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7891fee9-9818-4ade-a2c3-3fcc5b5be095/rulukejimabega.pdfIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/xivuvuwisagijareso.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c4c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4C7 4708 bytes
SHA-256: 8ee5a4f399e91921abfa72d6b15b93aefba1af8b301ee9b017d5edf0b4199e15
font_01_sfnt_off0000d4a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4A7 10196 bytes
SHA-256: 744069ae07213e2e10f7b08ff57b8760edb747be4aca33cfb9e8770b89e1153b
font_02_sfnt_off0000f78e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF78E 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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