Malicious PDF — malware analysis report

Static analysis result for SHA-256 01688646f03693da…

MALICIOUS

PDF

71.4 KB Created: 2020-12-15 03:31:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: f169e3621bb01fad5f5b1472fce26efb SHA-1: 9e2996a05ff380b7aab7a32154a2be7e6a6b8bff SHA-256: 01688646f03693da9a0906a69f5cd0fb0cc41e8850ccb11c0a904d504bb535c5
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to 'traffset.ru', which is likely used to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to 'Choices mod apk ios'.

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
  • 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/123?utm_term=choices+mod+apk+ios PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4382772/normal_5f8ec97da0460.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446026/normal_5fa53234ccb5d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401973/normal_5fd7f9f3d8f31.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/nowonovege/57249645906.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc51bf8c6d96458363d4b13/t/5fce28e174a40730fbc217c3/1607346401649/86855853305.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd2223e02d7d67505df527/1606230563427/jelisagopajadonowunub.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc58a1012facd59cecc81e0/t/5fd232e38185f4776a18a7eb/1607611108338/dragons_riders_of_berk_cheats.pdfIn PDF document text
    • https://s3.amazonaws.com/vetamedisoz/12330895714.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc56aec88c99b6d37c5a745/t/5fcffbc53e94b40d0387ea7c/1607465927804/english_classical_music_mp3_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/cardiac_arrest_bad_suns_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff654db8-b460-4b50-801c-471f7384ec3e/rofunesixasovasidibeb.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/barbecue_recipes_free_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc28402be9b69395115071f/t/5fc61a2c61e25426e10897a1/1606818349021/62994774212.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/calling_via_wifi_android.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/55746914470.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_off0000daae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAAE 5152 bytes
SHA-256: 0a412569644c32fc7fd2ecade0f9f0f4ab378c09102358378ccf02616db1859b
font_01_sfnt_off0000ec0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC0B 10828 bytes
SHA-256: e3ea4041c5839c0571cc2fb9e87b0bd375e752f80c40f8d952552dd254366897

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