Malicious PDF — malware analysis report

Static analysis result for SHA-256 26f8b10148aa2184…

MALICIOUS

PDF

69.9 KB Created: 2021-03-30 22:22:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 2195da49b85e0d972436e2443d5169a4 SHA-1: d598923535383daeff6b3a5d9db984eda0fecf1c SHA-256: 26f8b10148aa2184c0305069bd79b2561e328f9793d02860f1de27c590a01be9
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one prominent URL pointing to 'dugedepap.ru' and disguised as a headphone review. This suggests a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or delivering a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://dugedepap.ru/strik?utm_term=jlab+metal+rugged+in-ear+headphones+review PDF link annotation
    • http://bezanaralizeke.iblogger.org/numimubezalaxokateg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473403/normal_5fe7a15c5def8.pdfIn PDF document text
    • http://kibisiji.iblogger.org/avision_capture_tool_twain.pdfIn PDF document text
    • http://fazupefejivujuf.iblogger.org/what_are_some_examples_of_biohazardous_waste.pdfIn PDF document text
    • http://kavelux.22web.org/69355087597.pdfIn PDF document text
    • http://sidesevofexow.22web.org/new_amsterdam_season_3_episode_guide.pdfIn PDF document text
    • https://zigapugulila.weebly.com/uploads/1/3/0/7/130776078/3d27ffb78bd16c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401515/normal_602fdd3c86db1.pdfIn PDF document text
    • https://vidowenabep.weebly.com/uploads/1/3/5/3/135322196/786a9eb3d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391317/normal_603984164eb92.pdfIn PDF document text
    • https://fexemefamerera.weebly.com/uploads/1/3/4/2/134236105/2450276.pdfIn PDF document text
    • http://nelojoxemiri.iblogger.org/cessationism_vs._continuationism.pdfIn PDF document text
    • https://wezefumuge.weebly.com/uploads/1/3/4/6/134614004/wapiluw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457302/normal_5ffabaefda77a.pdfIn PDF document text
    • http://jiruvifoxur.iblogger.org/19273697319.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://puzuniposodaf.epizy.com/learn_french_ebook.pdfIn PDF document text
    • http://rolodumom.epizy.com/honeywell_1911i_barcode_scanner_programming_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/475e27af-86ec-4411-b20e-dd7953333c7f/22157253169.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78acb76f-4eac-4096-bc94-6ef9cd7f04f0/leguzatasizobufoletagufej.pdfIn PDF document text
    • http://zanebinelit.rf.gd/four_year_plan_template_google_sheets.pdfIn PDF document text
    • http://zulonojaminipe.rf.gd/bts_persona_album_songs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4dd5c0aa-3c9d-444c-846a-60502f227baf/robolesodezomiburovuka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59a58f88-3775-47d6-b2c6-c5aaf359456a/98568902231.pdfIn PDF document text
    • http://mofaxufotema.rf.gd/recuerdos_de_la_alhambra_sheet_music_guitar.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_off0000d3b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3B1 5684 bytes
SHA-256: 00564d6fa853c311b2017f4bf994e02ee434f0b9d9e68c4ec07cb33de8f12321
font_01_sfnt_off0000e6e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6E6 10188 bytes
SHA-256: e86510e60d8d9390d1f665b17cbc547b9bb5cfacb8f50e0961d39927aa0fe53e

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