Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7475f9bf3f41cb8…

MALICIOUS

PDF

69.4 KB Created: 2021-02-01 01:59:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 208c68691e17aae8b3d3889603fae4e7 SHA-1: 0e8e34ac941bc8995c923a4fbc4b5f5046da7f54 SHA-256: e7475f9bf3f41cb857ab435673106ebdb7c52ba72bfeac53056f2dad218c080a
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, and it contains a link to a known malicious redirector. The embedded content, though heavily obfuscated, suggests an attempt to disguise the malicious nature of the document, likely as a lure for phishing or malware delivery. No scripts were extracted, but the presence of a malicious URL is a strong indicator of 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
  • 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://yafferge.ru/aws?utm_term=feasibility+study+report+pdf In PDF document text
    • https://static.s123-cdn-static.com/uploads/4421224/normal_5fc773a5c54aa.pdfIn PDF document text
    • https://cdn.sqhk.co/pigajifaw/bv5ZjcN/free_download_bangla_to_english_translator.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421466/normal_5fd5fde99fd41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462352/normal_5fe6ec225a8e5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402953/normal_6004078b83618.pdfIn PDF document text
    • https://cdn.sqhk.co/busosuwik/ghif4ja/91882232181.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477387/normal_5fd217203c6bd.pdfIn PDF document text
    • http://baffer-shop.space/27192308432bfgq3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405414/normal_600cadb9f0a29.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463785/normal_5fe42d1b8a428.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500882/normal_5ff9a6a925b45.pdfIn PDF document text
    • https://cdn.sqhk.co/wepurodapike/ghiahag/86852533034.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/ximupuv/fapufasadudotepigakedawuk.pdfIn PDF document text
    • https://s3.amazonaws.com/topipovikapari/glenn_miller_american_patrol_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/bilaspur_university_private_form_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/zepifudoxapo/26340161675.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/gigisasawosigusexofovudor.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_off0000d3a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3A8 5232 bytes
SHA-256: c1dabace1c160e0083a8a9eac2c9f2eb6fa577f0ec53b27817874463c01a2ade
font_01_sfnt_off0000e587.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE587 10308 bytes
SHA-256: f82c2751cbd7c90cd8a89ac3fdee19988beb30bb3b95ef26bf2ebb2211f03dd8

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