Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ea8980da6be1b06…

MALICIOUS

PDF

74.8 KB Created: 2021-03-26 06:37:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c133101384b83ccc4b62c85b3b75b234 SHA-1: effdac3328cea1242cd6a69fa128ea3c84331424 SHA-256: 0ea8980da6be1b06bbffbd816f131fd74804d4b97132806769bb1c52710bbda1
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one pointing to 'https://jacksth.ru/wix?keyword=graco+lts+15+manual'. This URL is flagged as suspicious and is likely part of a link farm or phishing campaign. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/wix?keyword=graco+lts+15+manual
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdf
    • http://sayseedokg.com/nenaxerevabebekivufapoi40b7.pdf
    • http://lisolu.org/moxenopoguvlmzng.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/0bb2b4d0-5efa-4a3e-bb94-c2502aaafc33/electrical_safety_videos_free_download.pdf
    • https://d52aed46-be45-4f9b-8106-cf6fc7ee66c0.filesusr.com/ugd/b148e5_6e6d3ab6ea21417cbd09782b4800d357.pdf?index=true
    • https://d0bf7e8b-5449-41c0-93e9-161603c0719f.filesusr.com/ugd/197ed4_4be0fcc8c7dc4aba89af4c291dd4538e.pdf?index=true
    • https://uploads.strikinglycdn.com/files/2d94710a-8e09-478e-ba40-d04b3f64df71/27192019333.pdf
    • https://uploads.strikinglycdn.com/files/a26898b5-a34e-4e80-a4db-8ec232e67da1/xotomasibafu.pdf
    • https://uploads.strikinglycdn.com/files/bb9d06ff-1077-40e5-b9fb-ff3cdf2c460b/operating_systems_concepts_10th_edition_solutions.pdf
    • http://wimanugobupu.epizy.com/9620235357.pdf
    • https://uploads.strikinglycdn.com/files/cfced369-2c3d-431e-9cc5-9c32ad65e7e5/the_entertainer_personality_type_careers.pdf
    • https://uploads.strikinglycdn.com/files/8764e047-f32e-4e31-8bdd-8a5e3b98248e/who_is_behind_v_for_vendetta_mask.pdf
    • https://uploads.strikinglycdn.com/files/e47c9f1b-2eb2-4363-8566-438b7979d0c0/15737092001.pdf
    • http://robuvulad.rf.gd/el_principito_en_ingles_gratis.pdf
    • https://uploads.strikinglycdn.com/files/0c983cd7-025f-4cd2-8cf4-c8d141a5008c/gender_as_a_social_construct_ctet.pdf
    • https://uploads.strikinglycdn.com/files/592fcd79-d2cd-4c65-b567-7c62bc335103/bowavitilafa.pdf
    • https://uploads.strikinglycdn.com/files/3dc253a2-92bc-47a7-bfa4-71ab8a2cdcaa/71455495670.pdf
    • http://duvexarido.epizy.com/antiglobulin_test.pdf
    • https://6448a590-b571-4b71-a9e4-820b8531b153.filesusr.com/ugd/782be2_0767e3df11594e23b1a21425f7572b59.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e739.bin
63d0f17aa60db21fdcfd9079a7a36e5e961331d9256ea4f7bbd22069504123c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE739 5152 bytes
font_01_sfnt_off0000f8b2.bin
9a54faf894f1ae23cda6c89f796fd85e7f5450825166be0ccf6187a5daa9f9c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF8B2 11016 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.