Malicious PDF — malware analysis report

Static analysis result for SHA-256 27ec3817308e75b6…

MALICIOUS

PDF

43.4 KB Created: 2020-11-01 09:53:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 70180c9694b3db32e76c7c7a291417f6 SHA-1: 32445974a3d39556549c9a84c24c3bd2dcae7514 SHA-256: 27ec3817308e75b6fb8926a7ba8150e750b65264a0cac0facb58275041f04fff
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a high-risk heuristic firing for a malicious redirector link, which is also identified as an SEO UTM redirector. The embedded URL, https://ttraff.me/123?keyword=2019+ford+edge+commercial+song, is the primary indicator of malicious activity. While no scripts were explicitly extracted, the nature of redirector links in PDFs often implies an attempt to lead the user to a site that may host further malicious content or phishing forms.

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://ttraff.me/123?keyword=2019+ford+edge+commercial+song In PDF document text
    • https://cdn-cms.f-static.net/uploads/4386622/normal_5f8ff80b2ef37.pdfIn PDF document text
    • https://futokiwusilo.weebly.com/uploads/1/3/4/4/134458686/jotunuwono.pdfIn PDF document text
    • https://fidurelofomus.weebly.com/uploads/1/3/0/7/130740547/gikeja-midodegutoveta-gipelin.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/6113bac9-5a74-41cf-9c7b-200de1cb3e7e/wijejuneg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/248492b8-f557-4261-b959-822f41be702c/63561643205.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c36226d4-e579-4b41-9819-47387f7b57e7/bayer_advanced_tree_and_shrub_concentrate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7715/2151/files/piniforozogazejadajiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c50e86f-d5b8-4d1d-8695-e29e7df8b4a6/65821469357.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a1d1f96-9fb4-4a37-ab01-5b24a4062a1d/36780596635.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/112ac010-2a93-45b1-8e6d-a84d750c1704/20495383285.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_off00005e50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E50 5436 bytes
SHA-256: 2c88a9b1a42e6a7ed6efc42fae4734cc0e92054d289efe0b3d762edb7d4d206a
font_01_sfnt_off0000709d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x709D 10016 bytes
SHA-256: ccf0ce9cc6dc1caea5a323463590cb633b4483df16652c39c0bc6c004567e5ef
font_02_sfnt_off0000928c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x928C 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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