Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9f21ca3420575e3…

MALICIOUS

PDF

67.0 KB Created: 2020-11-19 02:27:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: e511ed49fccfed30033dd2a540638ded SHA-1: c6bc21e066eb253a579cc9b3806761e0b58d0816 SHA-256: c9f21ca3420575e34ba2ba82c5f00cc5772e64ccb9d92229dcc57051aa0689cd
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains embedded URLs, one of which, 'https://trafficel.ru/123?utm_term=snapper+weed+eater+walmart', is flagged as suspicious and likely part of a phishing or SEO spam campaign. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafficel.ru/123?utm_term=snapper+weed+eater+walmart PDF link annotation
    • https://nikoxutaju.weebly.com/uploads/1/3/1/3/131378952/3310329.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0540eb5b-3f50-4e39-b45e-065090a598b2/philosophy_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/samopakamefap/abc_sydney_tv_guide_tonight.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7eab3519-f590-4512-990b-9636d090f622/63128506152.pdfIn PDF document text
    • https://s3.amazonaws.com/kotenu/81013422939.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/48645428585.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b349874-5263-47ef-ae72-f7f71eeebc8d/100_deadly_skills_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/xesubuzulujikutabav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/906f6d30-ab8d-42a9-89af-a161ae2b8fb6/echo_reservoir_water_temperature.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee2916e7-11c4-4305-bc70-6bb247c5a1da/55281901574.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/html_help_workshop_1.3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1246fa1-6ffa-4ce5-a02d-6ef66eec9adb/kuken.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a17eb56-1c0a-4deb-8c31-c8a671c0ff66/t_barker_double_barrel_shotgun_parts.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_off0000c676.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC676 5120 bytes
SHA-256: 9ced0ded4a794248e2a9024c525b52b239bfd07d1d3d126129aceb7350395359
font_01_sfnt_off0000d7db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7DB 11736 bytes
SHA-256: 6256665c6d336b3514b6381bc195ba0d61c0b8244b6a04242b75370ac2f1b867

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