Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e5595c3c980fdc4…

MALICIOUS

PDF

85.8 KB Created: 2021-03-20 20:00:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b972274273ea461382171a20573467f0 SHA-1: 4234a07e2325d0f9ef43a761a3023c7f62bed7e0 SHA-256: 2e5595c3c980fdc4d47af4e8926dcaa17ac314a349d2439b669d96aa5093a4bd
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic identifying it as a 'PDF_SEO_LINK_FARM'. One prominent URL, 'https://maypoin.ru/wix?keyword=gang+hand+signs+bk', is directly embedded and likely serves as a lure. The ClamAV detection and ML classifier strongly indicate malicious intent, consistent with phishing or SEO spam tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://maypoin.ru/wix?keyword=gang+hand+signs+bk
    • https://cdn.sqhk.co/gunonutib/agdijlE/franklin_planner_excel_templates.pdf
    • https://cdn.sqhk.co/papusabefo/jgDSiax/44362511378.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bavuveba.epizy.com/11106819560.pdf
    • http://toxosimokumo.rf.gd/perforated_peptic_ulcer_treatment.pdf
    • https://s3.amazonaws.com/gomaxod/android_browser_bookmark_folder.pdf
    • https://s3.amazonaws.com/pipaneku/jupanolinaganapij.pdf
    • https://s3.amazonaws.com/jeromisixinolib/wikosewevejasit.pdf
    • https://s3.amazonaws.com/bewibiwat/setilukosiforekavaxugu.pdf
    • http://feriluja.epizy.com/best_baby_gates_for_play_area.pdf
    • https://165abacb-5525-4e66-971c-c167d859e756.filesusr.com/ugd/f3f2a5_d1e4bf3348e34c6a8d4ae4cc7f4946bc.pdf?index=true
    • https://s3.amazonaws.com/moduxanakuri/series_circuits_worksheet_answer_key.pdf
    • https://c0a42e0f-4cce-4e1b-84a6-2a5440198d67.filesusr.com/ugd/440b6d_2db1ceedc8274472929c1680842fd805.pdf?index=true
    • https://s3.amazonaws.com/setigafat/sobubadodelaxisafabugewi.pdf
    • https://56076a71-1b70-41e8-afe1-d547c394b4ee.filesusr.com/ugd/ab0d05_0039cbb7050d4c40b18e17e896274d30.pdf?index=true
    • https://uploads.strikinglycdn.com/files/83d6c23a-5ca7-44a1-9b39-26e2c5d80475/12554056593.pdf
    • https://uploads.strikinglycdn.com/files/92cc10c7-141e-4036-8514-ea1976889408/no_fear_shakespeare_julius_caesar_act_4_scene_3.pdf
    • https://uploads.strikinglycdn.com/files/e97cd19a-52ca-4fce-af0f-64f15429ee9a/soxewonipozopozuzixanafak.pdf
    • https://s3.amazonaws.com/jidagafinuxesu/tav_prasad_savaiye_path_benefits.pdf
    • https://s3.amazonaws.com/gafedupeba/avery_design_and_print_template_software.pdf
    • http://rabuwupitakif.rf.gd/64468144024.pdf
    • https://uploads.strikinglycdn.com/files/312f597b-c5f0-4c7b-a1bc-bd1cafa04ec6/what_is_formal_definition_and_informal_definition.pdf
    • https://uploads.strikinglycdn.com/files/532e27a7-31fb-4f3a-84d7-67be5c5d468b/how_to_change_my_logitech_mouse_settings.pdf
    • https://1c8fadd7-09eb-4d2b-9d42-8e747ba5ce52.filesusr.com/ugd/60625b_91453a53b6144701b5b7ba51f4cdfd1d.pdf?index=true
    • https://s3.amazonaws.com/woxewiwupir/taittiriya_aranyaka_telugu.pdf
    • 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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e57b.bin
8822a783f280cb9c3b8d0d6742673dbd1f0242ce8fa34a817dd6408efea747cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE57B 5772 bytes
font_01_sfnt_off0000f953.bin
02004224f74f536153454fdfdc214ccd9326478856c29e1a67fc28f940239667		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF953 5192 bytes
font_02_sfnt_off00010afd.bin
f5f0ea904a736bc066ae026642477786e0469188678195dbeb377d9ed9a8416a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10AFD 11608 bytes
font_03_sfnt_off00013290.bin
a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13290 16204 bytes

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