Malicious PDF — malware analysis report

Static analysis result for SHA-256 629a0229f9266f4d…

MALICIOUS

PDF

83.3 KB Created: 2021-04-06 13:05:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 06ffc7d3cf0b248542b1902f1f2bfe0c SHA-1: f489e45adb35f31dc578589538a08d1ede014826 SHA-256: 629a0229f9266f4dbc589c7bc40a566dc397a706cc9e98ebf8edc4bda9b8eb76
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable domains and are part of a link farm, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were extracted, the structure and URL patterns are consistent with a phishing lure designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://cdn.sqhk.co/resesexiraf/aqgLaQz/off_road_car_driving_game_download_for_pc.pdf In PDF document text
    • http://myshoes.moscow/big_mamas_funeral_gabriel_garcia_marquez_summary1cdd5.pdfIn PDF document text
    • http://wusokamojifel.scienceontheweb.net/degozufipol.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402507/normal_5ff84682ce38a.pdfIn PDF document text
    • http://plusstore.pro/facebook_video_online_siteugoki.pdfIn PDF document text
    • http://zopokujejisolan.getenjoyment.net/saga_oscuros_lauren_kate.pdfIn PDF document text
    • https://rapugudunoxe.weebly.com/uploads/1/3/4/0/134012743/8bfb2ca448b.pdfIn PDF document text
    • https://cdn.sqhk.co/xugumewaz/9jgkfha/nijijararotivutopepu.pdfIn PDF document text
    • https://cdn.sqhk.co/zirizowesaw/iijcvii/poxon.pdfIn PDF document text
    • http://vozobatenaw.mywebcommunity.org/asme_elevator_code.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416928/normal_6061d14981cac.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413374/normal_5feafd9ea1d7c.pdfIn PDF document text
    • http://mekapidi.medianewsonline.com/five-minute_mysteries_collection.pdfIn PDF document text
    • https://cdn.sqhk.co/zururodi/gjhzgjh/hair_color_theory_questions.pdfIn PDF document text
    • http://cccckkkkkdd.space/hp_laserjet_p3015_printer_59.30_errornvrl9.pdfIn PDF document text
    • http://nigma24invest.online/sibozadunekomalukivadnkark.pdfIn PDF document text
    • http://trokot-newshop.online/auto_login_in_androidraexn.pdfIn PDF document text
    • https://lupawepenotude.weebly.com/uploads/1/3/1/6/131606523/lenexawuvakuna.pdfIn PDF document text
    • https://ginozupil.weebly.com/uploads/1/3/1/4/131411281/nejexebeputina-zuwapujenoruza-sifegobite-ravibetejuba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387412/normal_5ff460ec2a214.pdfIn PDF document text
    • https://gufiferufa.weebly.com/uploads/1/3/2/3/132302963/bovubazi_janok.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://feedproxy.google.com/~r/wb/ENAH/~3/WboozbXZlIE/wb?keyword=what%20is%20an%20anti%20inflammatory%20diet%20for%20dogsPDF link annotation
    • https://uploads.strikinglycdn.com/files/f1cf9b11-9432-4f71-8853-c1711603aa01/11569139578.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58ba0428-3c86-4b5e-bc18-2821c6ffcbc7/oster_6_cup_rice_cooker_replacement_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96fe49bd-dc0b-47ab-a45a-b8915e16c556/kenmore_elite_fridge_repair_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db2e2b0b-aa69-431e-8ec2-1825db1030c2/what_movie_is_im_dreaming_of_a_white_christmas_from.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_off00010639.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10639 5436 bytes
SHA-256: 277d431aece3cb03815f5f3a1ed5a78815b99e658b48a6a31523eff2d59d0908
font_01_sfnt_off000118a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118A2 10668 bytes
SHA-256: 02a953c079135dcddc7144081e40fcf3f2d02039fef055b0bfaa545ecb23d271