Malicious PDF — malware analysis report

Static analysis result for SHA-256 d79aa3385f59e60e…

MALICIOUS

PDF

77.2 KB Created: 2021-04-03 21:40:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 9060492e4459c14352485d2baafc26c4 SHA-1: 587a33a1733be4ef3e0ee59fa64b585481909129 SHA-256: d79aa3385f59e60e471a889d940b28d9d33bdbf07d1f7ae3e3bd02ed804cebbf
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external links, many pointing to PDF files hosted on various domains, suggesting a link farm or redirection mechanism. The document body, though partially corrupted, references 'Lego battles cheat codes for santa', a common lure for phishing or malware distribution. The presence of embedded URLs and the overall structure strongly suggest this document is designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://nipisod.ru/wix?keyword=lego+battles+cheat+codes+for+santa PDF link annotation
    • https://sasadopebob.weebly.com/uploads/1/3/5/3/135324308/6a230c.pdfIn PDF document text
    • https://cdn.sqhk.co/dolitife/cVo7Egc/epic_battle_simulator_games_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/vonixilavot/X5jasLx/agya_ka_yo_kajal_song_free.pdfIn PDF document text
    • https://gewaxuselez.weebly.com/uploads/1/3/4/2/134265722/5519367.pdfIn PDF document text
    • https://cdn.sqhk.co/jevamivuvugi/ih5szLk/84337244200.pdfIn PDF document text
    • https://cdn.sqhk.co/vugidore/icjgelL/erase_google_maps_history_android.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480758/normal_5fdf3ec75f52e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465269/normal_5fccb608e4764.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415046/normal_60452c1016172.pdfIn PDF document text
    • https://cdn.sqhk.co/zanewijepex/dhjhbfs/rocketbook_review_youtube.pdfIn PDF document text
    • https://cdn.sqhk.co/nuwezomu/gdibnrO/pofuguva.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374372/normal_5fde8f43ae2ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475875/normal_6056228308dc4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366015/normal_5fe33270c3880.pdfIn PDF document text
    • https://cdn.sqhk.co/talexadu/gEhcjgs/53121398598.pdfIn PDF document text
    • https://cdn.sqhk.co/relulapezele/ihlWeYm/stickers_horror_whatsapp.pdfIn PDF document text
    • https://topizamo.weebly.com/uploads/1/3/4/4/134435864/turuku.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443617/normal_60374290463d4.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/kefiperizonofu/87881739590.pdfIn PDF document text
    • https://s3.amazonaws.com/fuvidokibet/sunbeam_microwave_silent_mode.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/nefotemaxidubari.pdfIn PDF document text
    • https://s3.amazonaws.com/jeponowon/dulces_mentiras_amargas_verdades_e_por_amor.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f06a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF06A 5364 bytes
SHA-256: f3b522ef3297a08c9cfbe493c2c4fe0c7561a4085ee9f06cc0ed7f3516689fc4
font_01_sfnt_off000102a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102A6 10696 bytes
SHA-256: da7dd41d0b85a091aee529c2d67a64b01fb46ffeb39ba4229c9547e622c7e002

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