Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a5ea3e658a86509…

MALICIOUS

PDF

92.9 KB Created: 2021-03-21 03:53:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: ebe50cc144c3e97ae3384b8157ada3cb SHA-1: 74e0e4f59b5a3394f210fcfc600d32efd10897a5 SHA-256: 0a5ea3e658a86509f9fb2bd1776cfde3b862bc44c3b77e0d4583f144ab225b65
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics and an ML classifier, with ClamAV detecting it as Pdf.Phishing.Trojan. The file contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or phishing attempt. One embedded URL, 'https://midufefew.ru/wix?keyword=service+of+a+pre-answer+motion+to+dismiss+new+york+10+days', is particularly suspicious and likely leads to a malicious payload or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://midufefew.ru/wix?keyword=service+of+a+pre-answer+motion+to+dismiss+new+york+10+days PDF link annotation
    • https://resezavurafufok.weebly.com/uploads/1/3/1/4/131407395/2280950.pdfIn PDF document text
    • http://eurofamily.pro/how_to_fold_up_a_total_gym_supra_proz7ne1.pdfIn PDF document text
    • https://kiniwotonupit.weebly.com/uploads/1/3/0/7/130776343/3161712.pdfIn PDF document text
    • https://cdn.sqhk.co/xolofiwano/jdifiha/marketplace_grill_menu_calories.pdfIn PDF document text
    • https://bimefitovaj.weebly.com/uploads/1/3/1/4/131437299/826dd84.pdfIn PDF document text
    • http://mihetos.xyz/how_to_use_paslode_im3509jzl5.pdfIn PDF document text
    • https://cdn.sqhk.co/lajakukilo/jfVnrgh/rigepesutunifavavatadopu.pdfIn PDF document text
    • https://cdn.sqhk.co/wisulekekij/hcqE87q/soccer_ball_3d_illusion_lamp.pdfIn PDF document text
    • https://cdn.sqhk.co/vukupamita/sdgjbhi/29068185678.pdfIn PDF document text
    • http://ririxodija.22web.org/satik.pdfIn PDF document text
    • http://gevilubim.iblogger.org/biometrical_genetics_in_plant_breeding.pdfIn PDF document text
    • https://bovikobugekut.weebly.com/uploads/1/3/0/7/130775803/9537918.pdfIn PDF document text
    • https://cdn.sqhk.co/kototokim/aigHBau/car_driving_games_for_pc_online.pdfIn PDF document text
    • https://makojinoguj.weebly.com/uploads/1/3/1/4/131406607/devuxate.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/8155c6c3-22ed-4198-b78c-937aacf43c65/how_long_can_you_drive_with_flashing_check_engine_light.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e98bf8b-a008-47f1-ab73-00539989424a/7858889533.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f325c575-8417-47e3-b1b6-8d2ab9e1b31e/kaplan_400_gre_words_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/257d970e-1c24-4ba5-a1ee-eb780a3beb9c/how_to_clean_a_whirlpool_top_load_washing_machine_filter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b589f2f-079c-4956-9e55-ce78f266868d/the_elephant_man_short_story.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7248f86-4a5b-4217-b8fc-132094e8991d/40170397131.pdfIn PDF document text
    • http://vepiwebime.epizy.com/collections_grade_7.pdfIn PDF document text
    • http://dojukagufeni.epizy.com/47953207937.pdfIn PDF document text
    • http://jezuboteseg.epizy.com/yamaha_rx-v571_remote_codes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ccb4b02-a291-417e-b408-94c079d67003/swing_trading_for_dummies_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bcd0ac3-704d-40a3-b8b6-d20bb856c769/46014762279.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000120af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120AF 5704 bytes
SHA-256: 96e10642afac5035b2dafb68ff26b914edccc74cdb9ae80ad17117bdd1cdaaee
font_01_sfnt_off00013422.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13422 10352 bytes
SHA-256: e22c5e83ef54ff18c13119de51d9743795711b2685a0ac6e339c6988a1c1e27a
font_02_sfnt_off0001578a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1578A 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3