Malicious PDF — malware analysis report

Static analysis result for SHA-256 be9dc062a4f90168…

MALICIOUS

PDF

69.0 KB Created: 2021-01-15 07:16:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7b91a0177b29996f963949c7e544542d SHA-1: 554d0741cb43e2abe707647c54b0467eb7776744 SHA-256: be9dc062a4f901686de274add78724b2ada073f897be25321615fdce534ce31c
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://cctraff.ru/aws?utm_term=gambar+background+untuk+quotes In PDF document text
    • https://cdn.sqhk.co/lazujanaziri/dhfLIgj/equalizer_pc_free.pdfIn PDF document text
    • https://cdn.sqhk.co/tavikagisato/ggig9hd/dash_dungeon_tomb_runner_dungeon_quest.pdfIn PDF document text
    • https://cdn.sqhk.co/wifavizen/ehdhgeZ/soccer_live_scores_odds_2in1.pdfIn PDF document text
    • https://ladunibik.weebly.com/uploads/1/3/4/0/134096621/7b1ba9d.pdfIn PDF document text
    • https://tegugozitofo.weebly.com/uploads/1/3/0/8/130874592/dexezed.pdfIn PDF document text
    • https://luvupomadimudux.weebly.com/uploads/1/3/4/3/134350134/7152649.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475872/normal_5fd27ab8928e2.pdfIn PDF document text
    • https://site-1175491.mozfiles.com/files/1175491/4_in_a_row_online_math_game.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370286/normal_5fcb39662e218.pdfIn PDF document text
    • https://site-1168079.mozfiles.com/files/1168079/38834199937.pdfIn PDF document text
    • https://site-1197012.mozfiles.com/files/1197012/physics_class_9_motion_questions.pdfIn PDF document text
    • https://site-1167955.mozfiles.com/files/1167955/tiny_houses_for_sale_in_pa.pdfIn PDF document text
    • https://cdn.sqhk.co/xanuramalu/gcher7Z/dowalefewu.pdfIn PDF document text
    • https://site-1177426.mozfiles.com/files/1177426/tiktok_app_for_adults.pdfIn PDF document text
    • https://narodejezagog.weebly.com/uploads/1/3/3/9/133988416/warewuwer-mokinixoji.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d2b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2B1 5588 bytes
SHA-256: 1564e18c74e09e7864198001ea431a72718a8c85d26c8ae611cf6695701b2d85
font_01_sfnt_off0000e593.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE593 9936 bytes
SHA-256: 1e1809a6cc894839ed6e2dbf1b26c8b24b1b22c4188a3da23da9f3c04f7f8e6a