Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c068dfb3f69b51f…

MALICIOUS

PDF

70.2 KB Created: 2021-02-12 12:14:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0104366447512bf2c7c85ce65fb0632f SHA-1: 9319d1afe466c18f6018daf830f9f2f4ff83fcc7 SHA-256: 7c068dfb3f69b51f6cdb4bb8ae34184e88f94b12eeadfb6b7a37bb7041834bd4
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://yafferge.ru/wix?keyword=orbit+6+station+timer+manual+57596 In PDF document text
    • https://static.s123-cdn-static.com/uploads/4381988/normal_5fe5576ee4b73.pdfIn PDF document text
    • http://mebosopevux.iblogger.org/adcraft_heater_proofer_manual.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462065/normal_5fda3ae7c2a3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407807/normal_601e692437573.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484612/normal_5ff929a3c3ac2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485587/normal_600eae43391c1.pdfIn PDF document text
    • http://movigakamemik.22web.org/aylesbury_grammar_school_sixth_form.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451023/normal_600e2f60242b5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392664/normal_5ff28dd66b009.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446399/normal_5ff1655c28b1d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366003/normal_5fc7e57848a11.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://revobisamapekuz.epizy.com/ssd_speed_test_mac.pdfIn PDF document text
    • http://rimaxuj.rf.gd/caller_tune_song_wapking.pdfIn PDF document text
    • http://tezipibuboxigo.epizy.com/xolum.pdfIn PDF document text
    • http://panulanupujudun.epizy.com/73419093345.pdfIn PDF document text
    • http://jivugojazop.epizy.com/43803683604.pdfIn PDF document text
    • http://zotoputoxo.rf.gd/naija_beat_instrumentals.pdfIn PDF document text
    • http://xofaxozewodaf.rf.gd/47816906820.pdfIn PDF document text
    • http://vudubarexofibuf.rf.gd/android_mobile_phones_below_8000_flipkart.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_off0000d642.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD642 5512 bytes
SHA-256: 1745c4699d19b75ca685d92428f3f8ae11a9ef31ee10710f1f6d5c4a0474d239
font_01_sfnt_off0000e8e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8E8 10148 bytes
SHA-256: 37ec4dc6ee7025da6364141bfd48279c0b0c689e724f0084af2349bca59dea04