Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7d1ffeb07e069bb…

MALICIOUS

PDF

126.5 KB Created: 2021-04-04 12:09:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 6892e622daa77e1913bea1dd21e2a359 SHA-1: c5a7beb05f231f40822b183725d2445156c4a225 SHA-256: b7d1ffeb07e069bb85c14f436030fcac1f4670be13c017a98b1b5fb37a273213
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous external URIs, many of which point to disposable domains and are likely part of a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, contains references to music genres and application metadata, suggesting a lure to disguise the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://fokemale.ru/wix?keyword=tipos+de+rock+musica PDF link annotation
    • http://jerimujolegem.medianewsonline.com/vagumonuvoduvel.pdfIn PDF document text
    • http://jilet1.club/life_is_strange_2_episode_5_souvenirshbgg6.pdfIn PDF document text
    • http://zaxevef.getenjoyment.net/how_do_i_adjust_the_bobbin_tension_on_my_kenmore_sewing_machine.pdfIn PDF document text
    • http://idealica-uficialeitalia.website/aao_kabhi_haveli_pe_video_mp41xrzi.pdfIn PDF document text
    • http://bilkan.fun/nikon_camera_d5200_price_in_indiat1i2y.pdfIn PDF document text
    • http://verefdliyvtorogo.xyz/true_colors_board_gamer2gpx.pdfIn PDF document text
    • http://xtina.online/genogram_social_work_templatewug9v.pdfIn PDF document text
    • http://hook-up.fun/8_ball_pool_unlimited_coins_and_cash3hquc.pdfIn PDF document text
    • http://particulier-societegenerale.xyz/olsat_level_c_practice_testx6695.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/duzexefemosaxe/finance_calculator_excel_sheet.pdfIn PDF document text
    • https://61090d85-22e6-4724-b969-52a17785150c.filesusr.com/ugd/952c2e_04d58b814c574daabdc752bf1c1e4b5a.pdf?index=trueIn PDF document text
    • https://d5cf7a15-73c9-49c9-ad57-d4f0303abb0c.filesusr.com/ugd/0d002d_2099e475d91d4c1cb68c64b71830c776.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zosevid/how_to_unlock_motorola_apx_6000.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38d26121-a364-48da-a927-9867280e50e7/75199268527.pdfIn PDF document text
    • http://dowafirowelumex.atwebpages.com/adventure_books_online.pdfIn PDF document text
    • http://zivexotafoni.myartsonline.com/tederuxog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf282785-4394-452b-a515-608f6e4c2d17/18716344308.pdfIn PDF document text
    • https://s3.amazonaws.com/gekixadonuru/annexure_st_1_in_word_format.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

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001ad36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AD36 5200 bytes
SHA-256: 17b9f41a6818795e46554ec53d96aa4019fa671ba4ba90795fc561fa0ad4fd35
font_01_sfnt_off0001becd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BECD 13944 bytes
SHA-256: 7a006d72af74c527b956c639ced108933c8919138f3ab0a5f83a890bfff49942

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