Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3d467ad30e69341…

MALICIOUS

PDF

72.6 KB Created: 2020-12-31 03:40:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: b917b9df2ecbfa5d17c855474e29aee7 SHA-1: ec2f67e5cdd7b2b18f2a6983e5c70bf16b55b9ab SHA-256: d3d467ad30e69341f4683c2b65a9917117655be2a1c47aaadaad057a70f8b1f5
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a lure related to 'Highway 55 idaho road conditions' which, upon inspection, redirects to a phishing URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or credential harvesting. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://traffset.ru/strik?utm_term=highway+55+idaho+road+conditions PDF link annotation
    • https://cdn.sqhk.co/gemadaruvow/eLNigif/wifikotazilunawu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381740/normal_5fb95315aa463.pdfIn PDF document text
    • https://cdn.sqhk.co/kepebeso/ZRgdig2/pusifajuronadebiful.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385636/normal_5fadc41f30e31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483851/normal_5fb9412429784.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383794/normal_5faa35b9e047f.pdfIn PDF document text
    • https://cdn.sqhk.co/jogepirar/aggy45W/tixobujogerojizoveb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379387/normal_5f98b387733c5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374199/normal_5fe4fe081e89b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389352/normal_5fa0c98fb625a.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/dfc4255f-9131-4605-af08-c6010c7fa869/29858723325.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 1

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_off0000df5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF5A 5448 bytes
SHA-256: 9a84dc07d6ec353c42f4cbc0cc52d800123450d6d7f96bba780f9d6d94952644
font_01_sfnt_off0000f1f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1F7 10468 bytes
SHA-256: b192511b09e02634e1d9d26ee345efc133955e2a61870a876647bdb96938b700

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