Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1335abe01d0c2b1…

MALICIOUS

PDF

72.9 KB Created: 2020-12-27 03:45:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 641bc890361581e26218dfe9c303b366 SHA-1: 83dec31b4cd5f0cf0de9b03a53aba804f877fabf SHA-256: e1335abe01d0c2b109e6442281629df961570ab5e45e7d5ba3df8cfb411c1e5a
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical alert for linking to known malicious redirector infrastructure and a high-confidence ML classification. The embedded URL, https://gettraff.ru/strik?utm_term=malaysia+trending+hashtag+now+instagram, is the primary indicator of malicious intent, likely serving as a lure for phishing or malware distribution. No scripts were extracted, but the PDF structure and URL strongly suggest a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://gettraff.ru/strik?utm_term=malaysia+trending+hashtag+now+instagram In PDF document text
    • https://xoririsi.weebly.com/uploads/1/3/4/8/134848275/074fef793da05.pdfIn PDF document text
    • https://cdn.sqhk.co/xulawajikigi/hcHZjdQ/snapped_full_episodes_2018.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/nademopor/ankara_metro_map.pdfIn PDF document text
    • https://s3.amazonaws.com/savukojubusum/bikabigovudurof.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/santa_cruz_flats_race_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/87306224145.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b525b493-68fe-45a0-a8f7-59f87203a857/escalation_protocol_schedule_april_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12a3930b-f614-4367-8159-3bc20a761c8a/wegewivikidetodibo.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/activepresenter_crack_free.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawe/proses_penyusunan_apbn_dan_apbd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9181ad27-d9af-413d-adbc-634c55f4aa41/vomuxikexomuzupaxoxalene.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/familia_bacillaceae.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_off0000e002.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE002 5440 bytes
SHA-256: e6016f18c9a9ecc6f940c5001639e600f5e43ab4c086f829f3f250671a30c6f7
font_01_sfnt_off0000f276.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF276 10624 bytes
SHA-256: 9b5b0a742787c1dca6efd1a32653632eb3ce6871f6fb27d21e1a1f87b981adb4

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