Malicious PDF — malware analysis report

Static analysis result for SHA-256 601dae279708be37…

MALICIOUS

PDF

88.4 KB Created: 2021-03-08 07:17:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 6ecace02a5971b99aba71766a12867c4 SHA-1: 67ebb1b2d3800fa1cf6d50d6fb9c9d28301c1119 SHA-256: 601dae279708be372ec277f2acb91be023a4bbb384f52203902253bdfe425877
126 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a link farm on disposable hosting and has been flagged as malicious by ML classifiers and ClamAV. The embedded URL 'https://resalured.ru/wix?keyword=acer+aspire+one+d255+service+manual' is a primary indicator of malicious intent, likely serving as a redirect to a phishing or malware distribution site. Although no scripts were explicitly extracted, the PDF structure and heuristics suggest an attempt to exploit users through deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://resalured.ru/wix?keyword=acer+aspire+one+d255+service+manual PDF link annotation
    • https://cdn.sqhk.co/lajawawinu/ijHhcgi/2456594375.pdfIn PDF document text
    • http://fiwisud.getenjoyment.net/the_lightning_thief_graphic_novel_epub.pdfIn PDF document text
    • https://cdn.sqhk.co/vobevufubito/eLjb3Gp/13027861980.pdfIn PDF document text
    • http://pinopizo.sportsontheweb.net/a_study_in_scarlet.pdfIn PDF document text
    • http://wesaremujoworu.22web.org/gotranscript_audio_test_answers_december_2018.pdfIn PDF document text
    • https://cdn.sqhk.co/dulinifijal/wihRjS4/crafty_craft_for_minecraft_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/jejefudebuxi/jdAMicC/ps2_alien_strategy_games.pdfIn PDF document text
    • http://vuvajujuli.mygamesonline.org/concepts_of_database_management_9th_edition.pdfIn PDF document text
    • https://cdn.sqhk.co/favosejo/fE8CA75/digital_media_marketing_approach.pdfIn PDF document text
    • http://xekugesakurupab.22web.org/cradle_to_cradle_summary_chapter_1.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/19a8f771-d02a-4f69-9ebc-9840888b1761/nerebojagaduzuzizotexuz.pdfIn PDF document text
    • http://futakanawus.onlinewebshop.net/6884140916.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93e7bd16-a026-4eb2-bbdd-02ac67fb287d/pubalebofuduruwo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57e7d116-30cf-418e-9d5d-36dc42e3aae1/98971792616.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e01dd85-4d78-4270-b639-9f7fcb29cdf4/basic_drawing_classes_for_adults.pdfIn PDF document text
    • http://bepolujogox.atwebpages.com/zibimixel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9562164b-5107-48aa-9485-f14e3f0f054f/76936420878.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76acbeac-6219-4750-926c-6b19afcc6e76/28728023714.pdfIn PDF document text
    • https://s3.amazonaws.com/kiguteperilodu/adidas_samba_platform_uomo.pdfIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/74960228336.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a69993d-85d0-45dd-bb49-5a0fd7a610df/ferojupifidizara.pdfIn PDF document text
    • http://vogafaxusa.epizy.com/varoruxogiladod.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_off00011d2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D2B 5524 bytes
SHA-256: bbd4233988d68b689c19dacd9715cf5220c093bebe880ea25eb7de70c80a1b15
font_01_sfnt_off00012fec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FEC 10504 bytes
SHA-256: 50d420153ae0fccdde07cef6349c7f072c1dca9e810c1beb05617a23b071359d