Malicious PDF — malware analysis report

Static analysis result for SHA-256 48063962c17dad67…

MALICIOUS

PDF

82.4 KB Created: 2021-05-07 04:59:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 5d39f05dd88a3a339b6affa7966debbb SHA-1: 2e907206531b5c1f378c21c94a3ec77adbf2167a SHA-256: 48063962c17dad67dc7207515e1db7bee334748b26da900dafafbd383ccfebc6
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable hosting or redirectors, indicating a link farm designed to lead users to malicious sites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to distribute second-stage payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://leonvi.ru/strik?utm_term=clicker+products+clt1d+programming PDF link annotation
    • http://fesotisifofil.mygamesonline.org/sales_manager_duties_and_responsibilities.pdfIn PDF document text
    • https://cdn.sqhk.co/xefijumu/gfwhsU8/royal_family_net_worth_2019.pdfIn PDF document text
    • http://runojiwum.getenjoyment.net/ditiroxoj.pdfIn PDF document text
    • https://cdn.sqhk.co/tixukiko/fgjZjfq/rushmore_shooting_supply.pdfIn PDF document text
    • http://resezowuzotul.22web.org/30350914389.pdfIn PDF document text
    • http://rebutawo.iblogger.org/alcohols_phenols_and_ethers_class_12_notes.pdfIn PDF document text
    • http://gomigapujasep.sportsontheweb.net/commandant_s_reading_list.pdfIn PDF document text
    • https://cdn.sqhk.co/zovitamojim/e5hdicU/steamship_authority_woods_hole_webcam.pdfIn PDF document text
    • http://kanaxade.mygamesonline.org/lulexilelorera.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/e5c92c05-52ab-475c-a88e-be950d2fed52/el_pollo_loco_menu_keto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c8f4b98-a679-4427-b1e2-a74e69905a91/lexus_300_is_f_sport.pdfIn PDF document text
    • http://vukilef.rf.gd/guxajigonitemas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23ec058d-8332-477d-bf15-de301d03da51/bixawibimazewozazato.pdfIn PDF document text
    • http://turegipamikum.epizy.com/1549409284.pdfIn PDF document text
    • http://vibakiwijikilok.rf.gd/fgo_na_shimosa_guide.pdfIn PDF document text
    • http://filuteka.rf.gd/ronusadikanaguxujed.pdfIn PDF document text
    • http://lamekukibudinos.epizy.com/hexblade_warlock_guide.pdfIn PDF document text
    • http://ruzuvune.epizy.com/57374261554.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d39a4779-a480-4904-92c5-7e9c0215b55e/best_low_voltage_landscape_lighting_connectors.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ddb0f8b-8d01-43d2-a5a3-18b2b9ad121b/linking_words_for_ielts_writing.pdfIn PDF document text
    • http://veduredetud.epizy.com/26329128051.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2e7a677-6e78-45f8-9d25-173d68e7f150/27811642665.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7070a89e-0511-4f7e-99f1-fcbfec95ca0c/jaban.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_off0000f47f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF47F 5416 bytes
SHA-256: ecf5a4425c91c4789ac59e3d42c98b6da73ca33aaf4beec950c201e1f8e967b1
font_01_sfnt_off000106cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106CD 11580 bytes
SHA-256: ab1a09ba52a0f94754e7ed6aceb150795575935b905c79ed27e0cf112e2d4d72
font_02_sfnt_off00012de1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DE1 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e