Malicious PDF — malware analysis report

Static analysis result for SHA-256 77e068fde8476cbc…

MALICIOUS

PDF

98.0 KB Created: 2020-11-22 03:24:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: f8f4e2ca00f46dfa8ff7faec8c88040e SHA-1: 15242e698fd31b71ae77b26d2896c0ee41a5d67a SHA-256: 77e068fde8476cbc11043165a13d399359cf06981ee3d5b822c25519e658ad4b
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to phish or deliver malware. The ML classifier and ClamAV detection strongly support its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content, likely for phishing or further exploitation.

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
  • 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/123?utm_term=interpreter+of+maladies+by+jhumpa+lahiri+pdf In PDF document text
    • https://lefedatit.weebly.com/uploads/1/3/0/7/130776734/zawotezib-notetinu-konef-vuvelariren.pdfIn PDF document text
    • https://koxalisibigemig.weebly.com/uploads/1/3/4/8/134854932/5928802.pdfIn PDF document text
    • https://bulububurelet.weebly.com/uploads/1/3/4/7/134742815/mobazofuxek.pdfIn PDF document text
    • https://xemuputib.weebly.com/uploads/1/3/4/5/134506680/60b5e0a49a363.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416659/normal_5fb4b68284112.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409417/normal_5f98178f71b90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370303/normal_5f88d10f8d74c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482869/normal_5fa83bf01958a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459796/normal_5faa16a3314b7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab2d6976-95ef-4c84-9198-b26314866b42/gimajaneret.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0c168d6-5ff3-4626-9c6b-fc839ba56119/mutopepafepojazo.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/weston_ma_assessors.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010144.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10144 8672 bytes
SHA-256: ba4cd02725257530607640f6aa539e8dd9f4097af51a8134af024d5b0982418d
font_01_sfnt_off00011e47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E47 5536 bytes
SHA-256: c15f58afbeb9201d719eb19bf828fb517b7d99f7663b3f77ef24cf16f1a2f116
font_02_sfnt_off000130f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130F0 16700 bytes
SHA-256: bff81c990ab64c5b1d8cd142a89f8740992f17ed0410ee12852816b93cede60a
font_03_sfnt_off0001617b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1617B 17060 bytes
SHA-256: d6a5b2e99c2970bd481fa16405c9052d4557e88bc3fa0baddd2c545d19a6c0b7

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