Malicious PDF — malware analysis report

Static analysis result for SHA-256 c225182d445b7200…

MALICIOUS

PDF

86.0 KB Created: 2021-04-12 06:45:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 0c2fd672e52fd8909c1bd1ca2719842d SHA-1: eba743d67cf518bb01943495ccebbb7dfdf483a0 SHA-256: c225182d445b72006deaf4d4baa3e88da6a9f0527064f81c4fe86aa9e19c2594
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains a large number of external links, suggesting it is part of a link farm designed to redirect users to potentially harmful websites. The document body, though heavily obfuscated, contains references to 'Feng shui 2020 monthly flying stars' and 'wkhtmltopdf', likely a lure to disguise the malicious nature of the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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 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.
  • 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://gimoguvi.ru/strik?utm_term=feng+shui+2020+monthly+flying+stars PDF link annotation
    • http://euroshopmn.space/zagezavutikiligbg4vw.pdfIn PDF document text
    • http://patajafurep.mywebcommunity.org/braun_series_7_mens_rechargeable_wet__dry_electric_foil_shaver.pdfIn PDF document text
    • https://sawuwirepugasup.weebly.com/uploads/1/3/0/9/130969548/devixate_kugujora_givul.pdfIn PDF document text
    • http://tokio-2020.fun/wosomop93f81.pdfIn PDF document text
    • http://repair-planshetov.ru/wujarezusatifkecb7.pdfIn PDF document text
    • http://pifedalune.medianewsonline.com/archie_comics_file.pdfIn PDF document text
    • http://profaudit32.ru/logitech_pure_fi_anywhere_2_user_guidetqduf.pdfIn PDF document text
    • http://kofodotig.sportsontheweb.net/32479699953.pdfIn PDF document text
    • https://lanulizuxuja.weebly.com/uploads/1/3/4/6/134658029/ratasofo.pdfIn PDF document text
    • http://cosmicgig.com/xikewapinijejidanezilenul3ew1v.pdfIn PDF document text
    • https://lejigatoni.weebly.com/uploads/1/3/1/8/131871980/suzonepawuxijen.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/xarojapi/anatomy_trains.pdfIn PDF document text
    • https://7a3463bf-3117-47cc-940f-ad9d50d05675.filesusr.com/ugd/9f2514_d584d5e6fbf4457e99b33b9c41266a88.pdf?index=trueIn PDF document text
    • https://7054f9d6-44ea-4b6c-8535-0d04e7cb9957.filesusr.com/ugd/963b03_f89cbaf7b5d14952813f0a456efccc67.pdf?index=trueIn PDF document text
    • https://bc260b4e-efc2-469d-9102-9c7234992d76.filesusr.com/ugd/b1b3ad_0c8af61105484bce82384db5c244fae9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/7913427059.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/13043824671.pdfIn PDF document text
    • https://ce099f17-eb12-430b-a452-8d789b3ee5a8.filesusr.com/ugd/aef5b7_7630c0524f02471c98dc5107c759aaa0.pdf?index=trueIn PDF document text
    • http://wilaroxu.atwebpages.com/62261472171.pdfIn PDF document text
    • https://s3.amazonaws.com/wowonesoribu/wrong_turn_movie_movierulz.pdfIn PDF document text
    • https://9f503c4c-bf14-4dcb-9a7a-68e0e5bb3568.filesusr.com/ugd/8ac1ab_2824cd8141d94a28b4d5b2b168ac42cc.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xupovobejanam/99749143120.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/remizimibuselujawije.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF8B 10428 bytes
SHA-256: 89e0002685626cdb09344068a5400e0f2337e05a68534220aa5919501f712490
font_01_sfnt_off000111ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111EF 5512 bytes
SHA-256: 05db5010897b5c7dba5d9c9ea460d1eb98e8101288924f1adc0b1c10af883ed7
font_02_sfnt_off00012496.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12496 11028 bytes
SHA-256: 64adede58086941a997ecb3216aa1ad2561b1cc342e0ff412893836c8f91d5d4

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