Malicious PDF — malware analysis report

Static analysis result for SHA-256 724b548129535636…

MALICIOUS

PDF

72.8 KB Created: 2021-02-05 12:32:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 6bc57e0c90785f6a623b4d5f2d565d29 SHA-1: 57fc34c26156fc249b827ee65e412b2296b15c53 SHA-256: 724b548129535636156b7a0adcb2fe586db7196cf7e213bba2b6c63a8c2df77e
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wb?keyword=b.%20a%20pass%202%20movie%20%20khatrimaza In PDF document text
    • https://cdn.sqhk.co/kagaxavog/dxRjjii/boxofolof.pdfIn PDF document text
    • https://cdn.sqhk.co/motulobugaji/Ujcib7Y/pictoword_level_482.pdfIn PDF document text
    • https://bejitukinerebi.weebly.com/uploads/1/3/4/8/134890105/0a945525c9e3b.pdfIn PDF document text
    • https://xidiziwuzubiwon.weebly.com/uploads/1/3/4/6/134653180/dawurukabilodifowur.pdfIn PDF document text
    • http://idealslim-italiaoficial.site/3sge_beams_manual_gearboxduit6.pdfIn PDF document text
    • http://gufubugab.22web.org/assetto_corsa_zolder_track.pdfIn PDF document text
    • http://loxapul.iblogger.org/film_ajari_aku_islam_indo_xxi.pdfIn PDF document text
    • http://reduslim-siteofficial.site/black_lion_claim_ticket_scrapik3wi.pdfIn PDF document text
    • http://creditinquiry.info/images_animated_cartoon_characters_freefo60i.pdfIn PDF document text
    • https://davixiwawelugez.weebly.com/uploads/1/3/4/1/134133028/4026747.pdfIn PDF document text
    • http://nejamaranidirit.22web.org/13710859575.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://goxojerodumofag.epizy.com/jijokux.pdfIn PDF document text
    • http://velefaluzi.epizy.com/blacked._com_meme_template_free.pdfIn PDF document text
    • http://rovututuxopi.epizy.com/ccna_security_lab_manual_free.pdfIn PDF document text
    • http://baverasoge.epizy.com/92538096.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_off0000df0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF0C 5412 bytes
SHA-256: cc20990ed26cc615da7061c789b2c499ac9cf28118cb1a9165340bd5c5d019d6
font_01_sfnt_off0000f15e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF15E 11008 bytes
SHA-256: 242a1e78b1e66240fb14df1bdfeaaf7bf84c25906953516354f954e67d517bb7