Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e60f9a53245ccef…

MALICIOUS

PDF

88.1 KB Created: 2021-03-17 04:10:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b68802ef215372bf835f3d0f6db600b8 SHA-1: 12a730927d55d16d680ebfe081ec9a5ceed214da SHA-256: 0e60f9a53245ccef5c5d5b791c5a6c04b813da0b60d2c7eedb9cc114690c69e8
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://botokaw.ru/wix?keyword=slaying+dragons+a+practical+guide+to+spiritual+warfare PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4370077/normal_5fe057729a918.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385230/normal_5ff0c7f25b7ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412584/normal_60514d9b40488.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499995/normal_5fe6ab288e467.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388416/normal_5fde5bfc87719.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/neviwove/nordictrack_gx_4.7r_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/is_the_treadclimber_good_for_losing_weight.pdfIn PDF document text
    • https://359ea524-acbf-40a7-8d58-ee96a8f10bc8.filesusr.com/ugd/ca2e76_9e33f4d258b04e3cbc8996ecf3923ed7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/63345497231.pdfIn PDF document text
    • https://cd753cf5-d90a-4073-9c55-931a76e81761.filesusr.com/ugd/8826df_78b41c453c114d9a9dd28df604d95663.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fobupojowojon/minijuzeluw.pdfIn PDF document text
    • https://39c3e2ba-dcb8-4bc0-9ed7-0058f02c59d5.filesusr.com/ugd/fd4c29_5809de96bb584990baa6dd51f1cd7812.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6559abb-6395-42f0-9d34-a39e307bbe30/mivegakemebuxiwufiwixogu.pdfIn PDF document text
    • https://d8aee3b0-83ea-4a0d-b8f9-524a85b41d10.filesusr.com/ugd/105b34_1979d82b682642de9fb07d9f5410f540.pdf?index=trueIn PDF document text
    • https://8ca15cf9-c5bf-4329-906a-32df3c7b5ab7.filesusr.com/ugd/4ca7f5_0b8979d1236d44eeb11dc8251f145ff4.pdf?index=trueIn PDF document text
    • https://e61e9f85-32c5-4861-9fd4-b89109084c35.filesusr.com/ugd/2e4eb4_d8222b9cb08847c485d04119b7a0835b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2f4e0af-6d46-4c8c-9a0a-ee51745b0dde/more_scary_stories_to_tell_in_the_dark_book_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f35d797-300a-46d2-a146-c215f83d2baa/aquasource_kitchen_faucet_repair_parts.pdfIn PDF document text
    • https://b1c30c75-ab46-439a-884d-3836ae4b8a49.filesusr.com/ugd/2d1648_c467a8a4e1e0445688f382767ef13c58.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0231fc8-fd0d-4a18-a8fa-2f4ee2bdcc2a/nuxofot.pdfIn PDF document text
    • https://fac30f9c-1bc3-4ff6-ac40-7ced1d2a170b.filesusr.com/ugd/3b7182_176eb69ded1246938dca7bcf59c1133f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wonumafubij/gipupixat.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f198.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF198 5620 bytes
SHA-256: c64fda7936163c8a96fa9e078160f044275e3232c93ec6b950aaf5ff8e7e409c
font_01_sfnt_off000104df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104DF 4048 bytes
SHA-256: 1abe9353902b6ebeab3384b17e1395ab7e1baf8a28e6b7d9f857685275dfa4ef
font_02_sfnt_off000113c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113C7 11952 bytes
SHA-256: a6a2a4ab96f31c08031476213c6f097011006398db0ecff408881858e8736029
font_03_sfnt_off00013b31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B31 16436 bytes
SHA-256: a8b0c25172aa9b5bc08eee067abf1650770238587142d73506cc124324baa444