Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f97c040f13f4088…

MALICIOUS

PDF

71.5 KB Created: 2021-02-28 10:48:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 0353c3887e9118f732a919e199c99960 SHA-1: 85df5d13cea8dbdd53dd1568d95d627f97e9e5d1 SHA-256: 3f97c040f13f408856c1e49eacd37d8073799730e052c69d5ad9f343ec3f606e
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xajibur.ru/award?keyword=house+on+mango+street+marin+summary PDF link annotation
    • https://cdn.sqhk.co/bulelovuroga/KLjgicZ/dumodit.pdfIn PDF document text
    • https://cdn.sqhk.co/miropefaneka/3qbCidA/40816460827.pdfIn PDF document text
    • http://fitdieta.com/5847686126ljhfv.pdfIn PDF document text
    • http://microbestdigitalmeter.xyz/midubiwinuripoqljw0.pdfIn PDF document text
    • https://cdn.sqhk.co/tixukiko/b4rgfhh/53191755172.pdfIn PDF document text
    • http://nitanupemil.mygamesonline.org/katawa_shoujo_hanako_route.pdfIn PDF document text
    • http://qiwi-wallet.online/sample_1st_birthday_invitation_templatesw7sjj.pdfIn PDF document text
    • https://cdn.sqhk.co/wixexozesila/fjcejgh/43630233427.pdfIn PDF document text
    • https://xitosuwoga.weebly.com/uploads/1/3/3/9/133988858/jefopet.pdfIn PDF document text
    • https://mujolimu.weebly.com/uploads/1/3/4/8/134868529/masupoxiwoxi.pdfIn PDF document text
    • http://tikonazab.iblogger.org/12172149110.pdfIn PDF document text
    • http://fodokimi.22web.org/cnet_vlc_mac.pdfIn PDF document text
    • http://form-lnstagramcopyrightservices.com/legend_of_tarzan_full_movie_online_frees8nkb.pdfIn PDF document text
    • https://bitabado.weebly.com/uploads/1/3/1/4/131436956/9573231.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tobikinos.onlinewebshop.net/to_be_a_slave_audiobook.pdfIn PDF document text
    • http://rabatelekovufar.myartsonline.com/how_to_adapt_formative_assessment_in_distance_learning.pdfIn PDF document text
    • http://fudipakuvile.epizy.com/android_10_oneplus_7_pro_official.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_off0000ddce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDCE 5036 bytes
SHA-256: 6384b266f606638a45c93f8fceb3021c6eb4ee44da358e47c5010af6d0a0a639
font_01_sfnt_off0000eedc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEDC 9936 bytes
SHA-256: 7444ede147b5868d92ea480753dad737c51bd694d04acc3ae1f4c6ec7633d395