Malicious PDF — malware analysis report

Static analysis result for SHA-256 654ea69e6f7bdd34…

MALICIOUS

PDF

64.7 KB Created: 2020-12-19 11:19:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 2088692774f0da31898137458dfc2150 SHA-1: 21d853dc99bcd0ba43c376a577d0a56b0de52b80 SHA-256: 654ea69e6f7bdd34b50ad395efc6986817a9ad47775ff66e260fae65f3a613ac
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. This URL is likely used to direct users to a malicious site, potentially for phishing or malware distribution. The ML classifier also strongly flagged this PDF as malicious, and ClamAV detected it as 'Pdf.Phishing.Trojan'. The document body, though heavily obfuscated, contains text related to wallpapers and application names, suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://ggtraff.ru/aws?utm_term=love+animation+wallpaper+for+android In PDF document text
    • https://cdn-cms.f-static.net/uploads/4388835/normal_5fa468d67fd37.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384460/normal_5f917d79ca07d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369516/normal_5f9348c48ec4f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393908/normal_5f90b3393a6af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480393/normal_5fdacd0bd2793.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366050/normal_5fcc3a2b2724b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402717/normal_5fb25ad431469.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474206/normal_5fc11348639b7.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/e7daf5b5-fdd1-4d0f-9937-0d058886f4c8/gifilupipakefajo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5234d61-f67b-4728-b9c7-ea38bd78ccdd/23594031010.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e081bc77-65ed-4f31-a3df-3686bc40aeb7/46235879641.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23e1f0d9-8736-4b7d-86e2-6d9f1bdceb9c/84591129733.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7df7bcba-645c-438c-aa79-f71729e7d611/21754591220.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_off0000c0e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0E3 5100 bytes
SHA-256: 43985d67fc6c7ba16e8d0964fb9f797b3e276e07a73635d03f03eb8723096ce1
font_01_sfnt_off0000d246.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD246 10528 bytes
SHA-256: fa2ca724b93a0c62621bf05c24f4ea7d4b84ad103220c0bf8d83a17e2320345a

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