Malicious PDF — malware analysis report

Static analysis result for SHA-256 718d061c53478cc4…

MALICIOUS

PDF

78.2 KB Created: 2021-03-25 11:31:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 843afdcfc8f88e844675522f8f50efe3 SHA-1: 7fc4e71255c04c8a75611197244ebcf371a2688d SHA-256: 718d061c53478cc4d2d13eddb0bf214eec392fdd7ec9b5f15f138e28e2fd26d5
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which are part of a link farm heuristic, suggesting an attempt to direct users to potentially malicious sites. ClamAV detection as 'Pdf.Phishing.Trojan' and ML classification further support its malicious nature. The embedded URLs and the PDF structure indicate a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jumiwimov.ru/aws?utm_term=box+istick+melo+60w+-+eleaf
    • https://cdn.sqhk.co/nesorosuxim/jiqQmij/90100604912.pdf
    • https://cdn.sqhk.co/juxezijafoz/yihiAV3/87813079185.pdf
    • https://cdn.sqhk.co/gogojiranat/PehaWja/game_called_among_us_age_rating.pdf
    • https://cdn.sqhk.co/wepunajexiju/CidZrjd/chocolat_trogneux_au_touquet.pdf
    • http://vehicleusains.com/symbols_in_act_1_of_romeo_and_juliet6ii6e.pdf
    • https://gibegijatu.weebly.com/uploads/1/3/5/4/135400332/vuwopunij-duxitis-kalaxa.pdf
    • http://mamontov-net.cc/what_is_big_data_analytics_salarym684k.pdf
    • http://daliadiago.com/disgaea_5_sage_guidefy4yc.pdf
    • https://cdn-cms.f-static.net/uploads/4382948/normal_601339877b82a.pdf
    • https://cdn.sqhk.co/fanekizesedi/rjh2idX/gemumavepinezepa.pdf
    • https://cdn.sqhk.co/bibikodazit/5Lljcja/54222513513.pdf
    • http://shortsomfj.space/lonely_planet_sweden_ebook_free_downloadfewn2.pdf
    • https://cdn-cms.f-static.net/uploads/4450048/normal_60550059b8134.pdf
    • https://cdn.sqhk.co/menodotitit/hupUbib/65625267140.pdf
    • https://cdn.sqhk.co/piwizogir/Riijdij/balal.pdf
    • http://kuwofadenokul.iblogger.org/kundalini_shakti_book.pdf
    • https://sezibuginodeso.weebly.com/uploads/1/3/4/4/134470526/6f048a.pdf
    • http://salestore.pro/chopsticks_song_sheet_music4vqfw.pdf
    • https://cdn.sqhk.co/wimiwupo/lkmRDhf/dragon_ball_z_dokkan_battle_jp_hack_ios.pdf
    • https://cdn.sqhk.co/gimexigerub/mFqYAjj/24442579158.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://setimuduwimu.epizy.com/franz_kafka_the_metamorphosis_analysis.pdf
    • http://nepafex.epizy.com/dwarf_fortress_steam_graphics_forum.pdf
    • http://juromozupipoju.rf.gd/arrays_in_computer_programming.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_off0000f07d.bin
14bb0a985edb397814a12e99d3e957c01c160481216f6b98851fca6f717758ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF07D 5532 bytes
font_01_sfnt_off00010366.bin
13a5d3737adc0b62ec5f973d75b5325aaffdb046327369f5591a32f4d3cc6b47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10366 12292 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.