Malicious PDF — malware analysis report

Static analysis result for SHA-256 62084b55a3c25ef6…

MALICIOUS

PDF

87.1 KB Created: 2021-06-01 06:01:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 26702a81cf8cabd2c3b0895706c51f64 SHA-1: 7f7c71e36b5fc3555d80cd4d0d99123b2c589b63 SHA-256: 62084b55a3c25ef6a272c7d77a76781af664e59cd51dae628e2be961e4468072
126 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent URL pointing to a site offering a song download, which is likely a lure. The PDF's structure and embedded links suggest it functions as a link farm designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://nomylo.ru/pbw?utm_term=pyar+deewana+hota+hai+mastana+hota+hai+full+song+download
    • https://xotukejurivaj.weebly.com/uploads/1/3/4/0/134016857/vonavekiraru.pdf
    • https://zuxevuzefadum.weebly.com/uploads/1/3/0/7/130775429/71198.pdf
    • https://gepidoduxaw.weebly.com/uploads/1/3/5/3/135324144/9a97162e75f0226.pdf
    • https://nawiveburejofi.weebly.com/uploads/1/3/1/3/131381882/namujido.pdf
    • https://cdn-cms.f-static.net/uploads/4367017/normal_6064e715cb3e4.pdf
    • https://jetosiwer.weebly.com/uploads/1/3/4/7/134767378/towotivosikexe-fexixomifagezu.pdf
    • https://static.s123-cdn-static.com/uploads/4502248/normal_5ffc2b7facfd1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://fedorahosted.org/lohit
    • https://uploads.strikinglycdn.com/files/e5089316-444d-4075-a9cb-d068bae01e2b/ergobaby_360_rear_carry.pdf
    • https://uploads.strikinglycdn.com/files/61c6db7d-192b-48c8-a5b3-725b9896c874/how_to_form_a_workout_plan.pdf
    • http://famukaser.pbworks.com/w/file/fetch/144423969/xakexoji.pdf
    • https://uploads.strikinglycdn.com/files/c42be1a9-49bf-479f-aef0-92753e46d174/aa_ab_laut_chalen_film_song_mp3_download.pdf
    • http://mapijakemifo.pbworks.com/w/file/fetch/144441351/boards_and_beyond_step_2_reddit.pdf
    • http://visetululiv.pbworks.com/f/new_kicks_shoes_quotes.pdf
    • http://ziduzobif.pbworks.com/w/file/fetch/144439710/how_to_make_a_knex_tank.pdf
    • https://uploads.strikinglycdn.com/files/5701a851-f9cf-4814-b8ca-636b6aa0a53b/rufakimunujajafagameko.pdf
    • https://uploads.strikinglycdn.com/files/8d4daffb-d5b6-4802-b143-089b111938a7/the_boy_who_harnessed_the_wind_summary_chapter_12.pdf
    • http://masawumel.pbworks.com/w/file/fetch/144420687/math_logic_problems_and_answers.pdf
    • https://uploads.strikinglycdn.com/files/0936273d-2090-4505-b99c-5e821fdd478d/87316269745.pdf
    • http://zowonixepor.pbworks.com/w/file/fetch/144442308/muvoxovevedexux.pdf
    • http://viluxese.pbworks.com/f/47179590125.pdf
    • http://vatojorisa.pbworks.com/f/89737910467.pdf
    • http://tosuvop.pbworks.com/f/davukokezekoxosekol.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000efb6.bin
bfa2fe92bdc2fd66dfc4dbc2e3af9cef568d474ad1e941f58286cdb0acc6edbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFB6 5400 bytes
font_01_sfnt_off000101f0.bin
19363d236f3ad10f763fb6441eabd2ae2fac70e02c4ba1effbae4a9f304cde57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101F0 10768 bytes
font_02_sfnt_off000126ad.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x126AD 4324 bytes
font_03_sfnt_off000134ad.bin
7baeab35dae229c6fa352b42ebfc03bed9813e9676566be72c9d0cfb2e085010		 pdf-font-stream PDF embedded font (sfnt) at offset 0x134AD 8016 bytes

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