Malicious PDF — malware analysis report

Static analysis result for SHA-256 e30815821e0af818…

MALICIOUS

PDF

133.5 KB Created: 2021-03-13 20:10:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 354e2db1bb00c4507a14994e3e0d44c3 SHA-1: 5b68e1332298b0116fcd84a08866fedc843ab82f SHA-256: e30815821e0af818d26a5176220455362f87b00c5491ec342b7eb1437d96a3a7
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or SEO manipulation tactic. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous URLs point towards a malicious document designed to redirect users or exploit them.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://leonvi.ru/award?keyword=bilderberg+group+members+pdf PDF link annotation
    • http://xagakojitogiva.getenjoyment.net/tegap.pdfIn PDF document text
    • https://cdn.sqhk.co/xagaxubibiz/2PidjdX/99068903906.pdfIn PDF document text
    • https://cdn.sqhk.co/gixedomawa/chgjggg/perfected_five_nights_at_freddy_s_2_scratch.pdfIn PDF document text
    • https://sinukunub.weebly.com/uploads/1/3/4/4/134431456/wemax_rovilamisunelo_nojalamomal.pdfIn PDF document text
    • http://fb-ig-copyright.com/lethal_race_hacked_gameogkwr.pdfIn PDF document text
    • https://papuwupiruji.weebly.com/uploads/1/3/4/3/134348025/wavukalugumopisu.pdfIn PDF document text
    • https://poximixej.weebly.com/uploads/1/3/0/7/130776069/672fa2.pdfIn PDF document text
    • http://tixshopclub.space/free_online_premarital_counseling_testpfgot.pdfIn PDF document text
    • http://woxijakuzadajew.getenjoyment.net/how_to_calculate_bank_loan_interest_per_annum.pdfIn PDF document text
    • http://silver35.ru/21157824815md2kz.pdfIn PDF document text
    • http://copriyghtconfirmed.com/carnitina_subcutanea9edkl.pdfIn PDF document text
    • https://cdn.sqhk.co/nivurerazusa/dGhcVhj/space_movie_girl_with_orange_hair.pdfIn PDF document text
    • http://uorott.com/85682193328zzw0p.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fuvarijes.atwebpages.com/baby_trend_flex_loc_infant_car_seat_expiration_date.pdfIn PDF document text
    • https://s3.amazonaws.com/tiduro/valpak_franchise_operations_inc.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/2499019021.pdfIn PDF document text
    • https://s3.amazonaws.com/gazijewevan/sevunis.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/80964515411.pdfIn PDF document text
    • http://nedizilunok.myartsonline.com/zadoritigo.pdfIn PDF document text
    • http://vujapoguxesak.myartsonline.com/motuxagoxujefirunagovu.pdfIn PDF document text
    • http://rogokumopukizu.epizy.com/30555891279.pdfIn PDF document text
    • https://s3.amazonaws.com/jazofi/zedijoropugi.pdfIn PDF document text
    • http://jupelujunu.epizy.com/mepovugesurikotaragad.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_off0001c634.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C634 5340 bytes
SHA-256: 5834033fedc51c9f939a8e1b2a7b46fba147a6ca32cb25c1e1a78c34161d0e11
font_01_sfnt_off0001d847.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D847 16908 bytes
SHA-256: 0ce3c979ef98d951de28469f82b4976a9061c7aba9b4b5f548f2a63afe217a28

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