Malicious PDF — malware analysis report

Static analysis result for SHA-256 68af23d0f5f63cc3…

MALICIOUS

PDF

75.7 KB Created: 2020-12-27 04:21:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 533b9547a9666806efe55c098fd50e65 SHA-1: 1d4e0f9c097fa54fea65ea9fb53337b423de0e2f SHA-256: 68af23d0f5f63cc3c69e5aa807646abfbb19373e1e59a96bc03052f205e149b4
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 pointing to 'trafftec.ru', which is likely part of a phishing or malware distribution scheme. No scripts were extracted, but the presence of the malicious URL strongly suggests an attempt to redirect the user to a harmful site.

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://trafftec.ru/123?utm_term=pier+1+lamps PDF link annotation
    • https://cdn.sqhk.co/lawafopugu/m7hiKgd/35055965648.pdfIn PDF document text
    • https://zimiduninu.weebly.com/uploads/1/3/1/6/131637103/6843763.pdfIn PDF document text
    • https://cdn.sqhk.co/samumosoxivi/jagfaNk/uc_browser_video_download_android_2._3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448110/normal_5fe7c234f1a22.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393763/normal_5fdb2376a848f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421366/normal_5fe3692a657ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365602/normal_5fc0949d72229.pdfIn PDF document text
    • https://xexonukomamub.weebly.com/uploads/1/3/4/3/134353621/2627881.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zobuwubedak/nolatirejulofeliwiret.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/533783d0-1653-4216-8266-77f835c1914c/ronaxeludawafizivojanapi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1adb702b-ea10-4e1c-a794-a2d9b53c330a/92195358221.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d02b51b6-69c3-4014-b78b-62e302100d03/pop_up_magic_castle_game_instructions.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e066.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE066 4512 bytes
SHA-256: 9e7bac5d7c985466429855f6f35edd439972dd66eb14885aac466c6f3f03bf2c
font_01_sfnt_off0000ef98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF98 10844 bytes
SHA-256: 6ab9330a2f6459f9bf91647db24e77ada45e88ed50aa8627151ed87b26a2343c
font_02_sfnt_off00011487.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11487 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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