Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ec0abdc69035333…

MALICIOUS

PDF

64.1 KB Created: 2021-01-03 08:19:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: b682f806ca25bb1ad3a9d7adb197ea26 SHA-1: 8cc9c032b2700cfadbc443a3951cfd955d57f2df SHA-256: 9ec0abdc69035333ca7200b448f6e77c8f3910f3ddf9856420ad49ad45c2e166
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. High-severity heuristics indicate the presence of an external URI and an SEO redirector link, suggesting a phishing lure for free downloads. The embedded URL 'https://trafftec.ru/aws?utm_term=o+bicho+vai+pegar+1' is a key indicator of this malicious intent.

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
  • 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://trafftec.ru/aws?utm_term=o+bicho+vai+pegar+1 PDF link annotation
    • https://kulufitobapesad.weebly.com/uploads/1/3/4/4/134443603/ec8fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407810/normal_5fe74db812bcd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453888/normal_5fe6b11d1a42e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417327/normal_5f9b6cbb53889.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409827/normal_5fbcf51bd1ae0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/nimunogosawesivunumadil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e215742-9e16-4ae7-bc24-b747c62a077b/nukosizuzezixatal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7af00895-9bf9-47fb-9baa-b3abd3a82a11/5022936620.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/kitchen_utensils_vocabulary_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6170e0e9-1d5d-49d4-88d4-69ec215544b9/can_you_eat_spider_crab_nj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6293909-bddf-4c1c-b9e5-e573ae7b5312/wijaligera.pdfIn PDF document text
    • https://s3.amazonaws.com/vofadoloves/aranyak_story.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_off0000ba8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA8E 5264 bytes
SHA-256: fa57586c48039bfbaf78e903ed239e45c4a8d9eb28881c244d3a43a103d5195e
font_01_sfnt_off0000cc7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC7B 12744 bytes
SHA-256: df0fb1b82a9479b155c366472b0eb15d4a87511009aaae9d03690b726a54da55

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