Malicious PDF — malware analysis report

Static analysis result for SHA-256 29e3024a83871cc3…

MALICIOUS

PDF

81.4 KB Created: 2021-04-07 14:17:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 1439ec46abd0c8b36599def40a1149a6 SHA-1: 4877fa7f93025b98a2e2e20a65101da5d00f18b2 SHA-256: 29e3024a83871cc3151b7417a45a1a026420f87f291129ef2b16ba7fc95de8de
134 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 a machine learning classifier with high confidence. It contains numerous links, many pointing to disposable hosting, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains keywords related to app downloads, aligning with the external URI found.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/wix?keyword=skater+app+apk+download PDF link annotation
    • http://riwozizedilar.mygamesonline.org/9965671930.pdfIn PDF document text
    • http://potajin.iblogger.org/boworegomubowunedigubezir.pdfIn PDF document text
    • http://fumufede.iblogger.org/46633966597.pdfIn PDF document text
    • http://rerazato.22web.org/wepogadesenodamuleboka.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://c69a8150-bb1e-4c46-878b-fc1622391bd7.filesusr.com/ugd/cf91d6_04d0f46d76f9453d81467be8963d6e41.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fonazuzixagizir/topidabibotapesem.pdfIn PDF document text
    • http://vidugozu.atwebpages.com/hillsborough_county_first_day_of_school_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/outline_for_research_paper.pdfIn PDF document text
    • https://6b2f37ea-3696-4b87-858b-663c379f6f6f.filesusr.com/ugd/16879a_2ede083ae0604b449824580214024760.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rafiralexezol/contax_g1_vs_g1_green_label.pdfIn PDF document text
    • https://s3.amazonaws.com/baxadelefofibuz/pathogenesis_of_typhoid.pdfIn PDF document text
    • http://zuguviwizinu.epizy.com/38581825117.pdfIn PDF document text
    • https://ac65beef-1c88-4b01-a948-251493ed82f2.filesusr.com/ugd/09857b_bb66aabe625f45189dd90d8319aeaa8f.pdf?index=trueIn PDF document text
    • http://bizaludewop.epizy.com/bootstrap_file_from_server.pdfIn PDF document text
    • https://7f03322d-63d6-449b-a8c2-a80beffeb2b6.filesusr.com/ugd/2994dd_9595e0474ae644f58bd7732736282a74.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/581d35aa-cbeb-4713-a456-a38461872022/65824728088.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/wupaselik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91dd9ba4-738f-4702-85f1-9fad7ca59829/the_five_love_languages_by_gary_chapman_read_online.pdfIn PDF document text
    • http://zitasixan.atwebpages.com/twilight_breaking_dawn_part_2_soundtrack_cd.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_off0000f34b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF34B 4776 bytes
SHA-256: 854261f0aba934e8c9fe908db8445adfd85ade41db4109d0cf4c3e446c1f4b3d
font_01_sfnt_off0001039c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1039C 10800 bytes
SHA-256: 2e0dd6dcac0a1859e93095a875c3f2b22823a144495da572e208b8f1ec215d1d
font_02_sfnt_off00012870.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12870 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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