Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2d6553646be069c…

MALICIOUS

PDF

82.9 KB Created: 2021-03-18 21:18:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: c2d17d3500a2e86a73fadc99c198fdf9 SHA-1: 9f559cbc9cf4b373e4e8bd2758ccfd86092de08c SHA-256: c2d6553646be069c1c7d11752e379af01da0fa7f75fc6efc7e87fe86f08a7557
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically identified as a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document, likely used as a lure for initial access.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://midufefew.ru/award?keyword=jean+baptiste+say+biografia+pdf PDF link annotation
    • https://vopoxeja.weebly.com/uploads/1/3/5/3/135346001/birum-soponukapi-kanevijogelu-mofutilogefak.pdfIn PDF document text
    • https://cdn.sqhk.co/moxelutedoje/iaxjaoQ/war_commander_wiki_controller.pdfIn PDF document text
    • http://fosipuzo.mypressonline.com/12639156280.pdfIn PDF document text
    • http://rozujed.sportsontheweb.net/juwofelefumulixum.pdfIn PDF document text
    • http://sizuxofutitarax.mypressonline.com/pokajisozul.pdfIn PDF document text
    • https://cdn.sqhk.co/pirujezexod/LgeYjah/kifejekivufimaju.pdfIn PDF document text
    • http://xokezuwadem.mygamesonline.org/aniara_poema.pdfIn PDF document text
    • http://zapixexarepol.medianewsonline.com/risifipobukowem.pdfIn PDF document text
    • https://rogidalot.weebly.com/uploads/1/3/1/6/131636841/bokez-didibon-fujogaseboge.pdfIn PDF document text
    • https://cdn.sqhk.co/fiseguvugele/jglhdhc/85548713865.pdfIn PDF document text
    • http://gosoxegekiri.mywebcommunity.org/how_to_put_log_base_in_ti_30xs_multiview.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://goseletew.epizy.com/how_to_be_an_english_as_a_second_language_teacher.pdfIn PDF document text
    • http://mukokulag.epizy.com/best_android_mods_xda.pdfIn PDF document text
    • http://xenezipulugiji.atwebpages.com/63313097009.pdfIn PDF document text
    • http://petojijoxura.onlinewebshop.net/rugituvovodeponepasegiges.pdfIn PDF document text
    • http://kagijido.myartsonline.com/sig_p226_kydex_holster_owb.pdfIn PDF document text
    • http://luzojora.atwebpages.com/wetelibijudix.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_off000102db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102DB 5408 bytes
SHA-256: 3ff323c3be39601aa0cb5b83335723eea7c2b54b4ae289b91380311e3f04a183
font_01_sfnt_off00011551.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11551 12360 bytes
SHA-256: b0a129edbe33ca9cf6420dfdc79cda7c6a33e300d0671062004af4e2e7b5347f

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