Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d7ddfbd5084c430…

MALICIOUS

PDF

73.1 KB Created: 2021-05-17 06:08:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 031fbbc16ef05a9260dad5a4e7384041 SHA-1: 77837f13703be4d15f5e855043fc9d035f722862 SHA-256: 6d7ddfbd5084c4304f229885b18ed63ded160a0639e3e12750888bf59a64ebf3
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs pointing to disposable domains, indicating a link farm designed to redirect users to potentially malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of an attempt to exploit users by directing them to external, untrusted resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://druttle.ru/wb?keyword=what%20ink%20cartridge%20does%20hp%20envy%205530%20use PDF link annotation
    • http://juzibekemuvur.iblogger.org/piano_finger_number_worksheet.pdfIn PDF document text
    • http://leyloften.online/what_does_a_fedex_smartpost_tracking_number_look_likeqddwk.pdfIn PDF document text
    • http://soldonlakewood.com/how_can_you_determine_the_end_behavior_of_a_polynomial_function_brainly7zcok.pdfIn PDF document text
    • http://tiktokcopyrighthelpteam.com/forikebavoweghqtgy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485821/normal_5fc97c75381c5.pdfIn PDF document text
    • http://prizinsta.site/como_descargar_el_formato_apa_6ta_edicion_para_word_2010yy04j.pdfIn PDF document text
    • http://familyit.pro/545996938117pf3b.pdfIn PDF document text
    • http://helpcenterbusiness.xyz/motorola_barcode_scanner_carriage_returndr2cq.pdfIn PDF document text
    • http://air-calm2.club/kfc_job_application_form_online_apply_now4chp2.pdfIn PDF document text
    • http://azorocheat1.xyz/ccna_security_for_dummiesc0n7c.pdfIn PDF document text
    • http://deromgroup.com/43911654777xo996.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446923/normal_603c1529b199a.pdfIn PDF document text
    • http://geekcods.com/81699840309wdq9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422163/normal_606a57e4dc526.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461204/normal_604cf5d8b0096.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379030/normal_60293470f2a36.pdfIn PDF document text
    • http://getliterate.online/69815042944kx2i9.pdfIn PDF document text
    • http://gelixovuxa.22web.org/canon_lide_210.pdfIn PDF document text
    • http://groby-ritual.online/832526420048x58b.pdfIn PDF document text
    • http://carinsusa.info/spectrum_math_workbook_grade_8_free92cvz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://folalolitawos.epizy.com/nizuzosewujikebaloli.pdfIn PDF document text
    • http://kekexebok.rf.gd/sapov.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_off0000def1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF1 5972 bytes
SHA-256: eddbf15ff30670ffc484272be8a54f560a9f3a0ef5c713cad0e2a10fd235cc20
font_01_sfnt_off0000f35b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF35B 10368 bytes
SHA-256: 05c05be7a2df052c7abea6fbc29396ac73738abbf6947edc60b3ab94f4a0fe30

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