Malicious PDF — malware analysis report

Static analysis result for SHA-256 26ee95adef083a69…

MALICIOUS

PDF

81.0 KB Created: 2021-04-07 01:23:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 0420e1d5cf865f4f3c7d45b0e2032a32 SHA-1: 0c10ae5d65ee516684162a0830433f24af85ba93 SHA-256: 26ee95adef083a695e60c59c56cb9e981edd45b95910217d4f25e7287da18fd3
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many pointing to disposable domains, and is flagged by ML classifiers and ClamAV as malicious. The document body, though heavily obfuscated, suggests a lure related to a generator manual. The presence of multiple external URIs and the link farm heuristic indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/123?utm_term=all+power+6000+watt+propane+generator+manual PDF link annotation
    • http://nuverlites.online/sirerupolatugabukudutuxim2hu80.pdfIn PDF document text
    • https://cdn.sqhk.co/mizipudi/ijjhjd4/90922214038.pdfIn PDF document text
    • https://cdn.sqhk.co/tisewesir/1udggC8/49507559769.pdfIn PDF document text
    • http://kowojolajamuv.getenjoyment.net/aoac_international_official_methods_of_analysis.pdfIn PDF document text
    • http://dalidusiz.mywebcommunity.org/62622657278.pdfIn PDF document text
    • http://7evenrp.ru/wahl_arco_cordless_pet_clipper_kit_manualb28ba.pdfIn PDF document text
    • http://50offshop.pro/85500539898mgqkf.pdfIn PDF document text
    • http://mirazogiz.iblogger.org/96737881280.pdfIn PDF document text
    • http://kamikofonem.mygamesonline.org/xifufadi.pdfIn PDF document text
    • http://noxaduva.mypressonline.com/80768153658.pdfIn PDF document text
    • http://kifejuja.medianewsonline.com/dosap.pdfIn PDF document text
    • https://cdn.sqhk.co/nuduniguwufo/geVhikE/google_camera_search_apk.pdfIn PDF document text
    • http://xejeboge.22web.org/b._ed_cet_question_paper_2017.pdfIn PDF document text
    • http://sevoxotedeki.medianewsonline.com/is_there_a_way_to_play_dd_online.pdfIn PDF document text
    • https://cdn.sqhk.co/jotapepikota/hdgdghN/contacts_for_astigmatism_and_dry_eyes.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://52b03d57-94e3-497b-b2ee-5a576b8f136c.filesusr.com/ugd/67ae49_0213e6c443804d5183f469d92659431e.pdf?index=trueIn PDF document text
    • https://626fb5af-1d67-41cb-86ce-204163677ff0.filesusr.com/ugd/9d869b_fedaa36edd5b4b429bbffefbd9f91724.pdf?index=trueIn PDF document text
    • https://a443db6b-eb5f-4890-a88d-0ebac2b320b2.filesusr.com/ugd/89b1bc_6bea78226448439a931c03cc27911f53.pdf?index=trueIn PDF document text
    • https://f6e2a16f-d004-42cd-8f17-0463e090774c.filesusr.com/ugd/c70c35_601cd5bb5e4f49af9053caa479933914.pdf?index=trueIn PDF document text
    • http://luxupovokajaf.onlinewebshop.net/aula_1_espaol.pdfIn PDF document text
    • http://mudiwedazefuveg.rf.gd/persuasive_writing_examples_for_grade_8.pdfIn PDF document text
    • http://kapodos.rf.gd/how_to_reset_a_dishwasher_samsung.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_off0000f18c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF18C 5172 bytes
SHA-256: 26f489f2cfff7d25d27d4190a4f4e77fe85bc987342da82e27ad5ba261f280b1
font_01_sfnt_off00010314.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10314 10828 bytes
SHA-256: 52097b3a1350a97062385daff472d9f5ed30e643785423f9c9972476debad0dc
font_02_sfnt_off000127e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127E0 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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