Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c6a02ea1ea1cefc…

MALICIOUS

PDF

71.6 KB Created: 2021-03-03 02:17:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ca26e6a0a577c25e9eca7de7f51497c5 SHA-1: cdfb5076a8b56fbcf4a4d00c35895793327d454b SHA-256: 3c6a02ea1ea1cefc09b9ff08f70cb5217b8267da964dde15186e17c1b41b36d7
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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=questions%20about%20lord%20of%20the%20flies%20chapter%201 In PDF document text
    • https://cdn.sqhk.co/noneniwetav/hf9Qoia/tuzopawofusewisaf.pdfIn PDF document text
    • http://kawofeme.iblogger.org/xenogears_deathblow_level_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/dobexesi/egfihBo/bokulopisubuxomakuvuwisa.pdfIn PDF document text
    • https://cdn.sqhk.co/zalivelo/whd1cY4/giruvurelu.pdfIn PDF document text
    • https://cdn.sqhk.co/rowojazur/6gdjfIw/13250036805.pdfIn PDF document text
    • https://cdn.sqhk.co/fabupiguboxa/dgcxBhd/20761645754.pdfIn PDF document text
    • https://cdn.sqhk.co/lamajemomu/ejigeih/83840730081.pdfIn PDF document text
    • http://wewazer.iblogger.org/radical_honesty_audiobook_free.pdfIn PDF document text
    • https://cdn.sqhk.co/rubupidorinu/bhhmonp/sipalijowafagozunu.pdfIn PDF document text
    • https://cdn.sqhk.co/jujejorule/fcF6SYC/download_game_ocean_survival_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/jimevexir/fhijbOZ/moto_creator_mod_apk_unlimited_money.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zimipasazodid.rf.gd/53388960043.pdfIn PDF document text
    • http://mezexefobotero.epizy.com/xomefuwupomabakapiwoma.pdfIn PDF document text
    • http://waraposid.rf.gd/vezubimigofuxozadipifusil.pdfIn PDF document text
    • http://kipixuge.epizy.com/depito.pdfIn PDF document text
    • http://vezigaje.epizy.com/pevevofaposagumomuzozo.pdfIn PDF document text
    • http://sofijorube.rf.gd/22843670036.pdfIn PDF document text
    • http://tinegomawula.epizy.com/zeworefutogunug.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_off0000da52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA52 5496 bytes
SHA-256: 4a3a13afd03850bd3e01ffc4b192844513738377700509f6309c498daf2c1f64
font_01_sfnt_off0000ecf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECF7 10672 bytes
SHA-256: 59aaa33df716357fc51d3baa2df39e5cc025f99cda8dfc21c432d7d7decc5cc6