Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ee97acd56a620c7…

MALICIOUS

PDF

73.2 KB Created: 2021-03-16 09:28:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 56f62d439371e7fbcbc023b87aca2673 SHA-1: aa0b214e55b2d940c03533002ef38953512105ea SHA-256: 7ee97acd56a620c7bdbd51f7a1dd320aaaf8dce049dfdf188720c05af99cece1
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating high maliciousness. It contains a large number of external links, suggesting a link farm or phishing attempt. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic indicate the primary function is to redirect users to potentially malicious external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/wix?keyword=icom+706+owners+manual
    • https://cdn.sqhk.co/muxaferamet/2Kf419z/ludo_game_download.pdf
    • https://cdn.sqhk.co/xuvisisitinu/njdhdge/ringtone_download_2019_malayalam.pdf
    • https://cdn.sqhk.co/tepobugu/1idifgh/xurode.pdf
    • https://kutowovazamil.weebly.com/uploads/1/3/4/3/134362820/5030554.pdf
    • https://cdn.sqhk.co/besuduxikuvo/gNgjXGf/kezipeboja.pdf
    • https://cdn.sqhk.co/basinasedu/gjeajhE/gitoba.pdf
    • https://cdn.sqhk.co/noxomosanena/AGyjhje/skin_tools_pro_apk.pdf
    • https://kefepifumadig.weebly.com/uploads/1/3/1/3/131383651/7047074.pdf
    • https://losarofimet.weebly.com/uploads/1/3/1/3/131384333/2067076.pdf
    • https://cdn.sqhk.co/wenegifuteg/fjggj8S/bivekuxo.pdf
    • https://cdn.sqhk.co/libibajuzumu/dbjeA6Y/bu_bhopal_admission_form_2019.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/de8caaa7-0576-4ff4-8774-cd6d4bfa2431/whirlpool_cabrio_dryer_wont_start_just_beeps.pdf
    • https://uploads.strikinglycdn.com/files/61694679-f979-49db-bfdc-999f3f771a89/dr_brown_bottle_warmer_and_sterilizer_instructions.pdf
    • https://uploads.strikinglycdn.com/files/ef5deb70-4490-433b-b06e-bcb6fcdbf432/how_to_fill_bobbin_brother.pdf
    • https://uploads.strikinglycdn.com/files/74bd7266-c56b-41af-bd44-72e20852c7e8/bob_books_sight_words_grade_1.pdf
    • https://uploads.strikinglycdn.com/files/fe6a8cd1-8009-4e24-8f91-ca2d00c8380b/susixewojakujilimazoko.pdf
    • https://uploads.strikinglycdn.com/files/62c5263c-c8ff-4d64-a60e-ceba6c3bae09/ruvoneligevelonopi.pdf
    • https://uploads.strikinglycdn.com/files/b3723315-5fdb-4269-b207-0c4424b9fa26/can_poor_countries_become_rich.pdf
    • https://uploads.strikinglycdn.com/files/1d37320d-5402-44ce-905e-ff05979824e9/53139748759.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d696.bin
98b25a4a6a672e001ccb47c5bf7c38303fd9c393aeb157d71f671119540728b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD696 5352 bytes
font_01_sfnt_off0000e8cb.bin
6d5b428a4bae26a4a96b62ca23ed5c52a72db43108a761093013f59afdab28e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8CB 15276 bytes

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