Malicious PDF — malware analysis report

Static analysis result for SHA-256 2001983d0553ef55…

MALICIOUS

PDF

80.3 KB Created: 2021-06-05 17:34:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 5ed459320c09228e04afe238fb44d784 SHA-1: cdc3a2256aa3db39a96e8ef1334c09203345b476 SHA-256: 2001983d0553ef554c3fa16fdd133bfa00be047a4428eefc3202671653c1368b
126 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains an embedded URI pointing to a suspicious domain, which is likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, appears to contain text related to movie searches, suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://medvor.ru/pbw?utm_term=oh+baby+telugu+full+movie+with+english+subtitles+watch+online PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3690c83a-c937-4769-a07a-2edb9d7b67cc/love_poems_for_husband_who_passed_away.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e56851e-6adc-4dd3-afd4-3f279a297493/26786873162.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbc34b4e-52f1-47b8-aa77-8edcbacc9ca6/88596201927.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf27f71a-bc0f-48bc-a999-f881312e7a1f/95001507604.pdfIn PDF document text
    • http://zezimin.pbworks.com/w/file/fetch/144412830/75855905374.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f4e58e1-4b1f-4c60-815f-42604df5e67f/software_application_test_plan_example.pdfIn PDF document text
    • http://funinupun.pbworks.com/w/file/fetch/144425319/92382146525.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79033401-3901-42e3-9dca-4ab58f9b816a/jixikokafiraravotul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25dd0d33-878e-4f3c-8abd-e825bad79329/samsung_m2070_toner_not_compatible.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/459334e4-3401-4425-9ac6-35bf3bb7f59c/zexupitekomex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf3aa9b2-8b95-4eeb-8591-88e144daa9fd/how_to_order_vegan_at_jersey_mikes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f05d4370-02f5-435b-9555-0e13d771babd/how_to_hire_a_medical_receptionist.pdfIn PDF document text
    • http://xodelow.pbworks.com/f/autocad_2013_activation_code_generator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb53ae49-89f4-454e-9568-f5debef62547/68729182201.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6518fb24-ae3d-4d72-a8ca-2c9869831d72/zewim.pdfIn PDF document text
    • http://taxexuwej.pbworks.com/f/dakamo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ee977a8-9e18-4675-bf30-dc55488f132b/77858552835.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e19f23b-fccf-4e10-9498-44d443b03e35/cuantas_pelculas_de_los_juegos_del_hambre_hay_en_netflix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d814a7a0-f97e-41f4-9913-edec6d2e7190/22955682668.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ce647d9-f282-4234-8332-dc2622aaf818/how_much_does_a_maintenance_manager_make.pdfIn PDF document text
    • http://zusemivak.pbworks.com/w/file/fetch/144537951/what_does_the_name_yahuah_mean.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88209032-ee56-4ba7-a031-6a55b34634da/963751219.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e284320d-5be7-4cf9-982d-06f9e7967f02/how_much_is_marvel_transformers_comics_worth.pdfIn PDF document text
    • http://niwomif.pbworks.com/w/file/fetch/144426021/ejercicios_sencillos_de_diagrama_de_arbol_resueltos.pdfIn PDF document text
    • http://wiwedano.pbworks.com/w/file/fetch/144425352/14446741417.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_off0000fb09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB09 5620 bytes
SHA-256: 37bafd1f73253a5e8e43e9cb03985e164ca42b4c56ea41e16f09591b9a7298c2
font_01_sfnt_off00010e25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E25 10756 bytes
SHA-256: 84c68f55b4193fdef3c14fc4160bf0f74fbfd1f9fad5535904debb2ddf7ae91e

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