Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5ba2de059274425…

MALICIOUS

PDF

39.1 KB Created: 2020-11-07 22:01:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: ab3dec967a3fe252fdf247ba3ba9b11c SHA-1: 30a025d1ad1e54957767b06cec64fe07d4cdbbc5 SHA-256: b5ba2de0592744257215327e11781175b25a9290b031ce12a5b942a0a9f8fd5f
76 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains a lure related to 'dress for rehearsal dinner guest' and embeds a URL that redirects to 'https://trafffi.ru/aws?keyword=dress+for+rehearsal+dinner+guest'. This URL is flagged as an SEO redirector, indicating a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://trafffi.ru/aws?keyword=dress+for+rehearsal+dinner+guest PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4385235/normal_5f94a2ef009f1.pdfIn PDF document text
    • https://nipufijupetobug.weebly.com/uploads/1/3/1/4/131482996/pugax.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367674/normal_5f94d7c527387.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427287/normal_5fa2b68d995f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367283/normal_5f8763d34cf14.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385436/normal_5f98a2a4ecb2f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ruxudaverotu.files.wordpress.com/2020/11/62956678797.pdfIn PDF document text
    • https://manetomimexa.files.wordpress.com/2020/11/lugotorizereziwatogukomak.pdfIn PDF document text
    • https://lusiwelop.files.wordpress.com/2020/11/xotefiwumir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d1c98f5-d7fa-435f-bbf1-86400f6893b4/90609958115.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3adda8e4-bf4d-4d06-b287-4c13111c222a/63064220689.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_off00005af2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AF2 5168 bytes
SHA-256: dd38af9dc996703cc8899f54b225e105094469821bb5e7deb648fcc547233a84
font_01_sfnt_off00006c86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C86 10408 bytes
SHA-256: 8996aca6596f28d0c111d0ca16d5302477338ac0e7346d0a4734e14949fbda49

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