Malicious PDF — malware analysis report

Static analysis result for SHA-256 90b30ab29195e6e5…

MALICIOUS

PDF

79.9 KB Created: 2021-04-16 09:42:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d20ed53530d3ddf2901ac3aa113028a SHA-1: 1083da22891a5352926bcb8fb22eed8770d51b42 SHA-256: 90b30ab29195e6e5afb1508a651a5ada4f6f275929cb2446b7df0478635300c1
126 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a primary focus on a URL that appears to be a search result for 'what does the number 800 mean in a dream'. This suggests a phishing or scam attempt to trick users into visiting a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://resalured.ru/strik?utm_term=what+does+the+number+800+mean+in+a+dream
    • https://buduruzuled.weebly.com/uploads/1/3/2/6/132682090/eaa13497e.pdf
    • http://superheatbelt.xyz/free_movie_making_software_for_mac_os_xxml2j.pdf
    • http://piredvizhnik.com/pearson_interactive_science_earth_s_structure_answersnzcle.pdf
    • https://fenatafu.weebly.com/uploads/1/3/1/6/131637570/4976346.pdf
    • https://cdn.sqhk.co/muwitajo/6WihhEq/zonefapamemuje.pdf
    • https://cdn.sqhk.co/bipadifudame/jjwjEic/30596653862.pdf
    • https://cdn.sqhk.co/dowamagova/Fhigjf2/wild_wild_west_song_escape_club_chords.pdf
    • http://fallofelin.online/el_arte_de_la_guerra_de_sun_tzu_peliculahnf6u.pdf
    • https://cdn.sqhk.co/fasazani/Wgihje2/xivenuxalodirifaweputux.pdf
    • https://rekeboko.weebly.com/uploads/1/3/4/8/134899800/6979653.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/d2467a8b-995d-43ae-9f66-3ddaa91b78a0/87842053261.pdf
    • https://uploads.strikinglycdn.com/files/828dcc52-15c2-4a9b-bc16-5c7e32081f71/93972363244.pdf
    • https://s3.amazonaws.com/lupuvogotog/madibemifavoxeliterugemam.pdf
    • https://436010f1-0dd7-4950-aec0-3bdf337573e8.filesusr.com/ugd/5a4c69_2f2b14976d4749c09f30ebcf07bc9c4a.pdf?index=true
    • https://s3.amazonaws.com/xisakazelelinim/what_are_good_interrogation_questions.pdf
    • https://uploads.strikinglycdn.com/files/0d4393c8-8553-4f37-9353-2aa564a36c1f/25940548270.pdf
    • https://63c5840e-267c-49ed-94d3-fc9f9d8b9c0b.filesusr.com/ugd/8c5bc8_027e17e9719e45feb0c5b2ef2155b698.pdf?index=true
    • https://s3.amazonaws.com/gozilum/agrominerais_para_o_brasil.pdf
    • https://c064424b-11a8-4e39-a524-24a74bcd733d.filesusr.com/ugd/54e393_ae146e44e31640bb957736d5fed40b98.pdf?index=true
    • https://s3.amazonaws.com/lovetijif/logitech_x-530_software_download.pdf
    • https://f61a8d15-835b-4c36-a3db-e4ead73ab13f.filesusr.com/ugd/e9f5f3_5446a6bbc59a42469f35f46babdadc08.pdf?index=true
    • https://uploads.strikinglycdn.com/files/e6902212-8e44-470b-af9a-1d44bee5c893/toro_power_clear_721_will_not_start.pdf
    • https://s3.amazonaws.com/xukonakefules/solving_quadratic_equations_word_problems.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f97a.bin
09ae9a8869118c97fef3829e7a0ddda17f2d9ee8383008d7b90daafe719d4df3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF97A 5520 bytes
font_01_sfnt_off00010c1a.bin
e3f70a08f4282257ca8d9b2d96631a3a2fb61b0837ba70b78ae5343f28276cbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C1A 11108 bytes

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