Malicious PDF — malware analysis report

Static analysis result for SHA-256 6806e754417e2d5c…

MALICIOUS

PDF

86.9 KB Created: 2021-01-06 10:34:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: c245fc411f3e82ede7106cfce74e6a5f SHA-1: 20bc8ac2d9a901a8a919acc39e30b4e2cfd388ba SHA-256: 6806e754417e2d5c07cf9fca7b062eb5ed7373fd62820fa13ec87e817ab843e6
214 Risk Score
Tags
free-cdn-ebook-manual-lure

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 finding for a link to known malicious redirector infrastructure. The document contains a large number of external links, suggesting it is part of a link farm designed to drive traffic to malicious sites. The ML classifier also returned a high confidence score for maliciousness.

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
  • 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://ggtraff.ru/123?utm_term=car+audio+capacitor+not+charging In PDF document text
    • https://cdn-cms.f-static.net/uploads/4478933/normal_5faf47653aff2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374002/normal_5f8b77c740654.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/wovexofek.pdfIn PDF document text
    • https://tevirilozarenov.weebly.com/uploads/1/3/2/6/132695732/gokunazidunuvuf-lezafepo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380383/normal_5ff06b9f51eac.pdfIn PDF document text
    • https://tenewokuge.weebly.com/uploads/1/3/1/3/131379402/sosotanag.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/bfd5100d-9c71-405c-8401-3b17803b9020/turuzegovobomixuzidazan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/677bd9b5-b772-4c54-9e6b-458a375af2cc/rooftop_cargo_bag_without_roof_rack.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac0c1454-00ce-49bf-8c3e-da71b3a799b9/vewarepeme.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75a799da-cd80-4ebb-ba32-5fb90c316030/flutterbye_fairy_charging_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f60eac5-9a11-4380-85af-7372bcbe5771/naija_porn_videos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f50785d7-147c-4dd4-9f3a-fde3ab4909fc/4399818331.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4add6d3-6741-44ef-bda5-c707491f3b9f/alameda_county_progressive_voting_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a983b2a1-e396-43bf-8f01-1e4646e2f623/introduction_to_machine_learning_alp.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d1743c2-ef98-4969-ad24-2432cd791987/17754425856.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_off00010b58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B58 4912 bytes
SHA-256: 0edd015f32066da26d6860c17bacc1cae47f766bc16e3b6d9beb050e56ee2862
font_01_sfnt_off00011c00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C00 10696 bytes
SHA-256: f6bb4ec00ca3b8633d74e6caaec928a15693fc8a9045762b23adbd42caef4b55
font_02_sfnt_off00014071.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14071 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

Open this report in the interactive analyzer, or submit your own file for analysis.