Malicious PDF — malware analysis report

Static analysis result for SHA-256 3209906b6af36921…

MALICIOUS

PDF

104.5 KB Created: 2021-03-15 08:37:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 06d1b8d9647c80c3adcc79b2a8db3b50 SHA-1: 5cf00a5c239ad266481da21dd1f9e75561af761c SHA-256: 3209906b6af369219283bc2efb800718c4fdff18ffcb833619fbc8bb1563c287
146 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged by ML classifiers and ClamAV as malicious. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a high volume of links on potentially untrustworthy hosting, suggesting a phishing or malware distribution scheme. While no scripts were explicitly extracted, the nature of the embedded links and the overall detection strongly suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 6

  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://mezovuduw.ru/wix?keyword=pokemon+ultra+moon+post+game+guide PDF link annotation
    • https://xuwatezifi.weebly.com/uploads/1/3/5/3/135305435/cc5b569577c63d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481667/normal_5fd27be569398.pdfIn PDF document text
    • http://doxugivo.22web.org/51818653709.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443325/normal_6004115ef3151.pdfIn PDF document text
    • https://cdn.sqhk.co/wituruxa/figihgh/dslr_camera_hd_professional_pro_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369306/normal_6026a9404c7c2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476432/normal_5fca7787e61a9.pdfIn PDF document text
    • https://cdn.sqhk.co/mekerijiwuv/wEgjmjt/halloween_face_masks_for_sale_amazon.pdfIn PDF document text
    • http://slamelina.website/what_name_means_daughter2cgsh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480145/normal_5fd2ea1549fca.pdfIn PDF document text
    • https://cdn.sqhk.co/talexadu/uKcxRjd/tagud.pdfIn PDF document text
    • http://shopsupergood.site/higher_status_the_new_science_of_success_and_achievement_audiobookepfrr.pdfIn PDF document text
    • https://cdn.sqhk.co/pipezifiwip/hbGNhUj/zowenaxevazewa.pdfIn PDF document text
    • https://wavinibavuma.weebly.com/uploads/1/3/1/3/131398010/mabimofesuded.pdfIn PDF document text
    • http://vulifux.66ghz.com/ielts_reading_passage_book.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/minegikukovel/spanish_to_english_learning_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/sonutopexaramuf/38326950151.pdfIn PDF document text
    • https://s3.amazonaws.com/zafibimutadoti/resistor_calculator_free_app.pdfIn PDF document text
    • http://segixiw.epizy.com/brief_answers_to_the_big_questions_review.pdfIn PDF document text
    • https://s3.amazonaws.com/ponivotigegepub/killing_floor_2_gunslinger_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/emulator_android_studio_online.pdfIn PDF document text
    • http://wuliwopiveti.rf.gd/dukeramugujewegede.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013910.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13910 5228 bytes
SHA-256: 574202f17f72aa2ca3f247874a1ece22f697fbf89ec7a8a0019e1903dbb21fc1
font_01_sfnt_off00014ab6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14AB6 11296 bytes
SHA-256: 3e4fa08b334dda69885d4ae4f0d5fa9a2bccdf7b0ca07bb62b98ed1c0455932e
font_02_sfnt_off00017101.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17101 16144 bytes
SHA-256: 9320b99deda550142f27c2863323979cb4f5e555579166d59bd20b4a8d1dbcb7
font_03_sfnt_off00018600.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18600 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3