Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e05bf88113c419e…

MALICIOUS

PDF

39.9 KB Created: 2020-11-06 22:12:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 61979848891b32dbd745e46cb6511e36 SHA-1: c01ef6b34571b4a541cd4c5ae77dc1b8ea12cce0 SHA-256: 1e05bf88113c419e166695565f6307357a5f86e3cc4a2c763cb6ad7537675696
134 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 links that redirect to known malicious infrastructure, specifically `https://gettraff.ru/aws?keyword=maytag+owners+manual+download`. This URL is flagged as a malicious redirector and is associated with SEO-based phishing lures, suggesting an attempt to trick users into downloading malicious files or divulging sensitive information. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://gettraff.ru/aws?keyword=maytag+owners+manual+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4401711/normal_5f91e237ef48a.pdfIn PDF document text
    • https://xumodaniteged.weebly.com/uploads/1/3/4/4/134480563/22bd59c939aa5d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371543/normal_5f942f9462f60.pdfIn PDF document text
    • https://waxusebodik.weebly.com/uploads/1/3/4/5/134529962/d095c37c3d4b2a.pdfIn PDF document text
    • https://buliduxefexefux.weebly.com/uploads/1/3/1/6/131636978/9080271.pdfIn PDF document text
    • https://juxupadozimufa.weebly.com/uploads/1/3/4/3/134388451/2575c97f1f8a17.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/240f8e5f-a304-40d3-9ab5-2d7fee40dca0/wejozes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0fcf095-50d0-46b5-bcfe-097cbadd396f/frozen_720p_dual_audio_movie_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8370be06-b36f-49a5-80a9-80c6d26a794c/47549464954.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9cd321c4-44b9-4035-9cfb-834cc529ad9f/92769010245.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87e69e43-08a5-4bd3-93d3-7b0aae3e5541/22366937011.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae978188-64f0-4bfd-95f3-f04efd5d3773/19509610792.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e52caaf-5272-411f-ae38-3daf0ec79d04/61999021891.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C42 5344 bytes
SHA-256: 4ed4160c2a3266837984956054a35a5337127934e2ef50480b9f96fa38859224
font_01_sfnt_off00006e7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E7C 10824 bytes
SHA-256: e50ef0ac58efac77917f60ae887d498233f2bf720d5e943a439c30bac4c93710

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