Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7d5e9dffd58f3d6…

MALICIOUS

PDF

83.6 KB Created: 2021-03-07 11:44:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: a84dfa9a80a6963e518b208e8d6b0f01 SHA-1: 01083a6e4a96a95b99e10c6db95269d4fe029afc SHA-256: e7d5e9dffd58f3d6765e7395bdd2137d638854025ee15c9b65725d82e52307be
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan. It contains numerous embedded URLs, many pointing to disposable or unknown domains, suggesting a link farm or phishing lure. The presence of external URIs and the overall structure indicate an attempt to redirect users to malicious content.

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
  • 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://xezojetit.ru/wix?keyword=does+bleach+kill+lice+eggs PDF link annotation
    • http://euromarket.pro/2504337053901h2j.pdfIn PDF document text
    • http://tiktokcopyrighthelpteam.com/kavuganufx7vph.pdfIn PDF document text
    • http://my-favshope.online/ragaxefedanitojea88z.pdfIn PDF document text
    • http://tekplafond.xyz/pc_emulator_for_windows_87c3zc.pdfIn PDF document text
    • http://frut-tree.site/maxulosizes1yds0.pdfIn PDF document text
    • http://hookup682.site/turbo_racing_league_onlineseybv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/566fdc77-06fc-4373-a25f-66fa086a47bc/76471916203.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1683a93d-9afa-4a01-89b9-19415dc1fb5c/hairspray_movie_cast_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b37711c0-45b5-42ff-b4ce-1175224a2d12/38357264239.pdfIn PDF document text
    • http://lofatis.epizy.com/which_reconstruction_plan_was_the_harshest.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f58db6d5-5490-40d7-84bc-d800f3dc44e1/22683608097.pdfIn PDF document text
    • http://jiresigotapikeb.rf.gd/nowebomud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8b2ca53-4650-4568-bbe1-830f71a4ecc4/how_to_use_dyson_ball_on_carpet.pdfIn PDF document text
    • http://riwuzapivegeb.rf.gd/giforodu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4552e617-6dc4-42f2-b3d8-e2d2d44962ed/how_to_run_a_cnc_machine.pdfIn PDF document text
    • http://witigegewujal.rf.gd/seed_of_chucky_movie_free.pdfIn PDF document text
    • http://mebijido.rf.gd/medscape_app_for_windows_10_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03bc542c-312b-4903-8164-f76a6e4813f1/38264970034.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0486e564-6237-4e86-8f7b-4356a0b550e3/canon_eos_650d_lens_mount.pdfIn PDF document text
    • http://fabotiwes.rf.gd/blender_cycles_materials_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/401b19c1-3509-4352-a329-727d443b11db/84600657426.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_off00010ad8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AD8 5168 bytes
SHA-256: 1c70318e6998dd569e2eb62727d63624800288c25bf373b2998412e45ceb2c4a
font_01_sfnt_off00011c74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C74 10956 bytes
SHA-256: 69445fffb036c28a05bd7d4af1144a1a43d29536d1451c20ce0c875efd40b3a0

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