Malicious PDF — malware analysis report

Static analysis result for SHA-256 eef83f7ad8f73f45…

MALICIOUS

PDF

73.2 KB Created: 2021-03-02 20:14:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 00a076d46c6d8c36e5e93f3b9e6be300 SHA-1: b8a13a293bed61339e4f6fa0ab6d91eb234dbd20 SHA-256: eef83f7ad8f73f457b240cddd8484da702452fde2922d5242436cf54ea815456
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • 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://leonvi.ru/award?keyword=camel+in+action+2+pdf+download PDF link annotation
    • http://dujojiwasemob.mywebcommunity.org/21205560554.pdfIn PDF document text
    • https://cdn.sqhk.co/semejegofip/jjcagem/44292981724.pdfIn PDF document text
    • https://jevamupoledi.weebly.com/uploads/1/3/4/7/134712268/pejigelabopa.pdfIn PDF document text
    • https://cdn.sqhk.co/baluwofuk/crhhdii/geziwutuluxisizagubezudip.pdfIn PDF document text
    • https://cdn.sqhk.co/zijigemeworu/V0ZH9hg/mejuwavetimagasuxofu.pdfIn PDF document text
    • http://fisuruwibowin.66ghz.com/blockbuster_tamil_video_song.pdfIn PDF document text
    • https://cdn.sqhk.co/dukoredod/bNJ92QS/fadonededotaza.pdfIn PDF document text
    • https://cdn.sqhk.co/dawajimet/hglHFcj/best_free_flowchart_applications.pdfIn PDF document text
    • http://vudujupuboneg.22web.org/what_are_the_4_molecules_of_life.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
    • http://texatopewewew.epizy.com/addition_and_subtraction_worksheets_fourth_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/jubiferekaka/18275387141.pdfIn PDF document text
    • https://s3.amazonaws.com/bajuse/calendar_apps_for_mobile.pdfIn PDF document text
    • http://vupafigimewex.rf.gd/minecraft_apk_pc_windows_7_free.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d5c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5C3 5060 bytes
SHA-256: 61b74af04e9202ce78709196e58f27adad5c388eb5618d984120696edd55efae
font_01_sfnt_off0000e701.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE701 10064 bytes
SHA-256: d06baeeef56e93c4cbd8df1358cc14adede81ec0fcbde37613a306649de107a9
font_02_sfnt_off00010963.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10963 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e