Malicious PDF — malware analysis report

Static analysis result for SHA-256 7222921197a65276…

MALICIOUS

PDF

77.4 KB Created: 2021-03-19 16:16:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f4dfd587404e0fcd9f60ae7a1ee0466f SHA-1: 783d0e8139512de0b473ba965fc057f3d221e1df SHA-256: 7222921197a65276ee2274feead64649aa6624518cec775274f2b2061f9c7cf0
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a significant number pointing to potentially malicious or link-farmed content, as indicated by the 'PDF_SEO_LINK_FARM' heuristic. The 'ML_NYX_PDF_MALICIOUS' and 'CLAMAV_DETECTION' heuristics confirm its malicious nature. The document body, though heavily obfuscated, suggests a lure related to device setup, likely to trick users into visiting the linked sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/strik?utm_term=how+to+put+my+echo+show+8+in+setup+mode
    • https://lusogovo.weebly.com/uploads/1/3/4/3/134358567/7778876.pdf
    • http://appeal-ig.com/the_assassins_blade_series_orderg5ej6.pdf
    • http://jebonefawudo.sportsontheweb.net/alto_saxophone_scales_and_arpeggios.pdf
    • http://coins24h.com/17187546985xard9.pdf
    • http://rimarilomikozu.medianewsonline.com/abide_with_me_sheet_music_piano.pdf
    • http://mebel-albero.ru/17038014383vdmx1.pdf
    • https://tabogivazosepa.weebly.com/uploads/1/3/1/8/131871767/3340131.pdf
    • https://bebojeraje.weebly.com/uploads/1/3/5/3/135302211/dabenevop.pdf
    • https://nojamatisi.weebly.com/uploads/1/3/1/3/131384142/nusezokodewi.pdf
    • http://ruluzuzadol.mypressonline.com/the_heiress_full_movie_online.pdf
    • https://nibowivuxewanu.weebly.com/uploads/1/3/1/3/131379040/merelela-sotazajenan-pemedoza.pdf
    • http://pokovata.scienceontheweb.net/clasificacion_de_los_animales_segun_su_habitat.pdf
    • http://introdom.ru/ninja_parkour_vector_323zhg.pdf
    • http://busimaderule.mywebcommunity.org/solving_by_quadratic_formula_worksheet.pdf
    • http://asia.kiwi/16223466467lvl3t.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://6205d428-d5dc-494e-bbc3-e2236f9d811e.filesusr.com/ugd/6885a6_868f8d6a12364ca796baeab017b18b39.pdf?index=true
    • http://gevalej.epizy.com/brick_breaker_mod_apk_revdl.pdf
    • https://6cdf8c5e-36a0-4b6d-987f-32d3d50030cd.filesusr.com/ugd/3c2e2e_5cbe7c91a4b341b89f6f2640e8a55b57.pdf?index=true
    • https://s3.amazonaws.com/luborinizu/zexilitezevudifafaxu.pdf
    • http://muzubakow.epizy.com/john_lewis_bed_sheets_king_size.pdf
    • http://fapugiv.rf.gd/vibapagosesadabigalazoxen.pdf
    • http://nivugugop.rf.gd/prime_video_apk_for_iffalcon_tv.pdf
    • http://pejomozudone.epizy.com/how_much_do_xbox_one_cost_on_black_friday.pdf
    • https://s3.amazonaws.com/kisimujuk/ranuronagufixa.pdf
    • https://11210a16-d5d1-4e17-93a3-27fbbb12f21b.filesusr.com/ugd/fb658e_4cb2825bac4e4de79ec06309eec9a357.pdf?index=true
    • https://s3.amazonaws.com/zafijukopa/niduvatele.pdf
    • https://d6b7b3c7-8429-4d82-9d75-5d5d09e763cc.filesusr.com/ugd/a8c229_20961bdcd23843f1b2fe0ed0f200e50d.pdf?index=true
    • https://s3.amazonaws.com/lanorolowu/sniper_elite_4_trophy_guide_ps4.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_off0000f1d8.bin
89e961cd935b2723131e306ab51d70ba1932c58d03cab65878aea4a420fb2723		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1D8 5324 bytes
font_01_sfnt_off000103f0.bin
708028cbe1c050445065cff8d63c8d17c5bfda6652748e76836bfaab05d53ae6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x103F0 10432 bytes

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