Malicious PDF — malware analysis report

Static analysis result for SHA-256 41290b970e6e6203…

MALICIOUS

PDF

70.2 KB Created: 2020-11-20 23:48:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 93ae60512149f078e2ad601b798c87b0 SHA-1: 1a2a7201a366e48b533e1d5da5144c312867add1 SHA-256: 41290b970e6e620325393d0f02666be6560f4cee47a7468a2ccb95678dee989a
96 Risk Score

Malware Insights

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

The sample is a PDF file flagged as malicious by ClamAV and an ML classifier. It contains an embedded URL pointing to 'trafftec.ru', which is likely used for phishing or to download a secondary payload. The document body appears to be corrupted or obfuscated, preventing a clear understanding of its specific lure, but the presence of the malicious URL and the high risk score indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=sony+str-dn840+specs PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375087/normal_5f8e00bb9ef59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454821/normal_5fa6d08b54ed0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389804/normal_5f907ee07b9a1.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/gupuso/the_princeton_review_cracking_the_gre_2017_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/988f075a-053f-444e-af91-e1cdce96577d/49349120612.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c460d1d-9d41-4c7c-8f86-caefb8ef5b64/danigigijejidaserujuper.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/nuxopi.pdfIn PDF document text
    • https://s3.amazonaws.com/zonivezada/12852257180.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/dovipobepefifukesovawaber.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/botisajuwinuwutexexot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef64732e-9aed-4592-8fb8-944ee33c8a7d/60477229955.pdfIn PDF document text
    • https://s3.amazonaws.com/tipikaxe/11094718973.pdfIn PDF document text
    • https://s3.amazonaws.com/pajukovuxetu/applied_operations_research_notes_madras_university.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff587d03-6339-44cf-944c-37580343dd8d/butipisogulazowubogo.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_off0000c6d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6D7 5224 bytes
SHA-256: 77291a0ba564873aae5b84d4919f97c277781b438ac55f47d8352ee79a4cc769
font_01_sfnt_off0000d8b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8B5 11008 bytes
SHA-256: 9d30b474a78b0d2b587c464290774fae3cb7b4b6be3dba6487c9374c8ba7477c
font_02_sfnt_off0000fe2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE2A 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

Open this report in the interactive analyzer, or submit your own file for analysis.