Malicious PDF — malware analysis report

Static analysis result for SHA-256 835586868c62d889…

MALICIOUS

PDF

74.1 KB Created: 2020-12-18 03:33:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 299d75b139d86b0358e7bc02f10c7f99 SHA-1: e6943446598a5f1ec4adff5fbea939dfe1073730 SHA-256: 835586868c62d889cb82ccba4f7f2ff2e6f17b8c879138079a6a80da62b40705
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ggtraff.ru, which is disguised with a lure related to 'Harry Potter illustrated ibooks'. This indicates an attempt to trick the user into visiting a malicious site. The ML classifier and ClamAV detection strongly support the malicious nature of this file, classifying it as a phishing or trojan-type threat.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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://ggtraff.ru/123?utm_term=harry+potter+illustrated+ibooks In PDF document text
    • https://lumezoti.weebly.com/uploads/1/3/4/8/134863392/88d18f9ef86c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426421/normal_5fa7e59b4fe29.pdfIn PDF document text
    • https://jakoxizejibak.weebly.com/uploads/1/3/4/3/134348863/fasarebededatab-gajip-jokajikutapip.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/julaxel/66525213984.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2bc6ebf71053ccb1bf174/t/5fcb887936758319a5549666/1607174265703/armoni_launcher_ios_14_pro_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/14.1_classification_of_the_elements_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/nabifovu/59572357481.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/pudasomukuresibijaxojeji.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/92645645369.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_off0000e617.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE617 5220 bytes
SHA-256: b45994ea422d1c667c6352b155fc4ac539478cc8643d3ee41b26797657d7eac8
font_01_sfnt_off0000f7e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7E0 10596 bytes
SHA-256: 826c7bcad4bab1c69d67154705966e00d35c0492d446c03e7044010ba314dbef

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