Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ce5cee1b700e8cc…

MALICIOUS

PDF

86.0 KB Created: 2021-06-13 04:47:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c94e9e44c596b330eb0a743c2ecd5781 SHA-1: e3e343c2eb321650c0c1bfef0e2b9a89de6c01b3 SHA-256: 0ce5cee1b700e8cc39de8bd827c1b4cae2bad39e217506828cbd6c2eb8bcad32
126 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to disposable hosting services, suggesting a link farm designed to redirect users. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically identifies this pattern, indicating the document's purpose is to host a large number of links, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://drafthe.ru/pbw?utm_term=legendary+beaver+rdr2+location
    • https://fepafevadaxajaw.weebly.com/uploads/1/3/4/0/134095897/migojab.pdf
    • https://bejobajota.weebly.com/uploads/1/3/4/7/134727936/pozamugemutamup.pdf
    • https://gegosituvoxefo.weebly.com/uploads/1/3/5/3/135349754/kigirotumarolu-muferobifiwokin.pdf
    • https://static.s123-cdn-static.com/uploads/4417643/normal_5feb2377196f8.pdf
    • https://cdn-cms.f-static.net/uploads/4371524/normal_603ce0989f20d.pdf
    • https://static.s123-cdn-static.com/uploads/4426697/normal_5feb9aa539fbf.pdf
    • https://static.s123-cdn-static.com/uploads/4454049/normal_5fdd327e63df1.pdf
    • https://cdn-cms.f-static.net/uploads/4459028/normal_5fd7bb44c0d4c.pdf
    • https://pulipelese.weebly.com/uploads/1/3/4/6/134686308/vomodadute-womavarapeto-nabot-vewoduv.pdf
    • https://static.s123-cdn-static.com/uploads/4370746/normal_5fc639b29aa1f.pdf
    • https://cdn-cms.f-static.net/uploads/4476015/normal_605ef0f4c91e4.pdf
    • https://cdn-cms.f-static.net/uploads/4459636/normal_5fd68d61f270a.pdf
    • https://cdn-cms.f-static.net/uploads/4455883/normal_602c892f5015f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://nolumemonip.pbworks.com/w/file/fetch/144528438/gibanifozoketimet.pdf
    • http://mepijewaj.pbworks.com/f/zootopia_full_movie_in_hindi_dubbed_download_300mb.pdf
    • https://uploads.strikinglycdn.com/files/2bdab9c0-4fc0-4837-ae8a-4ed845a29968/what_is_the_composition_of_photography.pdf
    • https://uploads.strikinglycdn.com/files/64409eea-b7a9-471b-b50d-5f53ee554116/wahl_multi_cut_dog_clipper_set_argos.pdf
    • http://zafasuvolo.pbworks.com/w/file/fetch/144544131/nanapegererewopebebep.pdf
    • http://luwolozibiva.pbworks.com/w/file/fetch/145099488/computer_organization_and_design_mips_edition_5th_edition.pdf
    • http://doxawadar.pbworks.com/f/woxidudovu.pdf
    • http://sijomirurefi.pbworks.com/f/formula_para_calcular_la_molalidad_de_una_solucion.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e583.bin
e1e81d9be4323b9096f6e0f81da2d5064092bf09de7e373f63590c21e277c3a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE583 5304 bytes
font_01_sfnt_off0000f7ab.bin
52a50f367a3d8710774bc0c6f65398b78e2930e23201a0eb1282fb5b96544cb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7AB 6764 bytes
font_02_sfnt_off00010da4.bin
df9a1837ab048558562706653892c73aa9c7eab204ed68965b8716f3d0050910		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10DA4 11180 bytes
font_03_sfnt_off000133f7.bin
82ff1b67254b78c1ee0adf625a5874e83155b3daef551421cdcfc373801bb273		 pdf-font-stream PDF embedded font (sfnt) at offset 0x133F7 16436 bytes

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