Malicious PDF — malware analysis report

Static analysis result for SHA-256 bde81cc86f947a62…

MALICIOUS

PDF

78.1 KB Created: 2020-12-27 08:22:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 88d52d680d0cb6850fdf227298eccd62 SHA-1: e53f9503384e7f4d8d6960f1e4fe25c9771f9b6e SHA-256: bde81cc86f947a6284c335e6735f37ead9267859914fc4499384c9b9f8b2a520
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 a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that points to a suspicious domain, likely intended to redirect the user to a malicious site. No scripts were extracted, but the presence of an external URI suggests an attempt to lead the user to a compromised resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://trafftec.ru/aws?utm_term=polar+form+l%25C3%25A0+g%25C3%25AC PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4373999/normal_5f8f9e4013e90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460447/normal_5fb801d549d43.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/bomifabipi/forex_brokers_with_mt4_platform.pdfIn PDF document text
    • https://s3.amazonaws.com/gawabog/29525935017.pdfIn PDF document text
    • https://s3.amazonaws.com/kigavanus/music_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezodepugov/voxenuxatokufozujuzez.pdfIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/fusionner_1_page_sur_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/467d5d56-b035-4132-b46c-56d93005611a/cube_bird_square_egg_stacker.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/fashion_magazine_cover_template.pdfIn PDF document text
    • https://s3.amazonaws.com/lolaritemukole/13263121520.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d75a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD75A 5200 bytes
SHA-256: d1fe161e88370855246f6a5bd1292b9359921c53d796525a4b6f902f8f225ba2
font_01_sfnt_off0000e868.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE868 13056 bytes
SHA-256: eb80c0b2f565bc662bb6c8cd4864cd357992d6aeed868d2218d7e4d58279d003
font_02_sfnt_off0001152a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1152A 16076 bytes
SHA-256: bfd5fcdb7495bed175e4f51938194e2ecb7e505d90535bc2124716332a04a4ab

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