Malicious PDF — malware analysis report

Static analysis result for SHA-256 f38d2e463fa4fbea…

MALICIOUS

PDF

31.0 KB Created: 2020-11-07 00:55:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 7dfc04448782fa734b368ccd9f42f1eb SHA-1: 5f7dd3118d16d94e6f6ebdbe25ef13dc65bfc6ea SHA-256: f38d2e463fa4fbea3d297fa6fb1c49b245f6447e733a5d967d7e0b383f09d4f2
114 Risk Score

Malware Insights

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

The PDF is identified as an image-only document designed as a lure, typical of phishing attacks. It contains a clickable link that redirects to known malicious infrastructure at 'traffine.ru'. The ML classifier strongly supports the malicious verdict, indicating a high likelihood of this PDF being used for malicious purposes, likely to direct users to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 1 text block(s), carries a click-outward action, and is only 30 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://traffine.ru/aws?keyword=examples+of+compare+and+contrast+essay In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370529/normal_5f883c4c2fb7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367645/normal_5f883c99353e0.pdfIn PDF document text
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/pigizun.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389376/normal_5f9dc6d87dc1a.pdfIn PDF document text
    • https://fubasuwa.weebly.com/uploads/1/3/4/6/134611144/827240.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/89a7beaa-4a9f-4a74-9083-b4aeac0405b1/3rd_grade_student_council_speech_ideas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/202ace60-f2e8-461e-8bf2-a1665f77e19b/fulolerinolujupopu.pdfIn PDF document text
    • https://s3.amazonaws.com/fifuto/motos_yamaha_2018_mexico.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f9932d5-c9cf-4dbc-8aa9-b3ff92a8ed39/kid_gift_ideas_for_white_elephant.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b66ee11b-21bf-439e-b497-cd6fc5665d86/calculus_trke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24a2e5a4-e5c5-4f97-851f-217300077cbe/newiroso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/776c2d42-222a-47f3-990f-1a1cafdcd770/xefesojarapapaze.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/cacingan_pada_anak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/758024c3-e58d-428c-bf3e-bdaccabd8893/mubiniwoxajuse.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_off000041de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41DE 5428 bytes
SHA-256: d652cabac0609941c4d65efd4ce3c14e13b9c5dc526df45109ae856e001dabdb
font_01_sfnt_off0000544c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x544C 7836 bytes
SHA-256: 7fea270ad5370910ee938cc2967eacf31f38796c110e9fa3ce071af2f2248a89

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