Malicious PDF — malware analysis report

Static analysis result for SHA-256 95f1154730ae5800…

MALICIOUS

PDF

74.9 KB Created: 2021-03-23 08:03:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 77e46b6a8bf25aab4a1632c3d46febe5 SHA-1: 20d541d71e92ae98e22f8734be1d1b17ef1649b8 SHA-256: 95f1154730ae5800feaa184bed67b6c971ecc8b3e053284c0a3786ad8c841766
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ML classifiers and ClamAV, as malicious and phishing-related. It contains numerous embedded URLs, with a primary focus on 'baarspo.ru' and 'tafuxasomup.getenjoyment.net', suggesting a lure to external malicious content. The document body, though heavily obfuscated, contains text related to 'out of state learner's permit', indicating a potential pretext for the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/wix?keyword=out+of+state+learner%2527s+permit PDF link annotation
    • http://tafuxasomup.getenjoyment.net/93504306358.pdfIn PDF document text
    • http://wutanitof.22web.org/bd_passport_renew_form.pdfIn PDF document text
    • http://zarudofafibitov.mywebcommunity.org/eenadu_epaper_total_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489846/normal_5fe17e97f0171.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409806/normal_5feb0bfe9343b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473030/normal_5ff177cce81c2.pdfIn PDF document text
    • http://xesapuwax.mywebcommunity.org/free_crochet_patterns_for_baby_blankets_easy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490116/normal_5fcdc623d364b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://roporuti.onlinewebshop.net/how_to_view_photos_on_mac_from_external_hard_drive.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45ab4971-2a98-452e-bece-67f392fdec0a/85046193819.pdfIn PDF document text
    • http://lapetagalelan.myartsonline.com/character_motivation_graphic_organizer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60024c29-5fa5-4c0a-b12b-47b3fdef2ce0/43450011765.pdfIn PDF document text
    • http://xijewixevav.onlinewebshop.net/live_betting_strategies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b1c50c0-652e-446e-b05c-9c6baa915c33/three_billy_goats_gruff_scholastic.pdfIn PDF document text
    • http://vimitafukufes.rf.gd/glandular_system.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2412e503-3c3d-41c5-9cce-df6579834c58/66756830180.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0586ccb0-4497-414a-881b-f96452beb457/83537361061.pdfIn PDF document text
    • http://zujuxeropide.rf.gd/wuridufodolufumuxa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a49f14fe-adb9-4d16-8a38-69f1260522cd/vezokuvejenolib.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_off0000e68a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE68A 5108 bytes
SHA-256: b34f383c77072aad7bd614f6e8d1327a5e25efea5ea67f901f4d36b5eb89865b
font_01_sfnt_off0000f7dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7DD 10768 bytes
SHA-256: b224a4c6626c96a9d6e2fb32eb341921c4721da6647f601c5f49ec9ea1f35056

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