Malicious PDF — malware analysis report

Static analysis result for SHA-256 00866df93ff736e6…

MALICIOUS

PDF

96.8 KB Created: 2021-03-23 01:56:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b1a198b409dc0b6266c5405215db4110 SHA-1: 93c59166e96965dba6e7b0c2b443fe61df75e995 SHA-256: 00866df93ff736e6d885cb9f40e0569297f3cfd5ffae6722ca4b53a79fa9bf60
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9927

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://jottigo.ru/wix?keyword=aesthetic+bio+template+copy+and+paste PDF link annotation
    • https://janikopet.weebly.com/uploads/1/3/4/6/134690806/1031834.pdfIn PDF document text
    • https://lufiwusogak.weebly.com/uploads/1/3/4/3/134319395/518032d7462a.pdfIn PDF document text
    • http://lexisunat.iblogger.org/formalismo_y_antiformalismo_juridico.pdfIn PDF document text
    • http://javebamugizal.66ghz.com/convert_to_excel_spreadsheet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470979/normal_6025108e0c7bc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393348/normal_5febdba05f4f0.pdfIn PDF document text
    • http://erogan-columbia.site/sewelamujovezirafasigocx9q.pdfIn PDF document text
    • http://gufutaca1.xyz/19784791135lsb40.pdfIn PDF document text
    • https://nagipabusodeza.weebly.com/uploads/1/3/1/4/131453106/famep_fiwele_bupebebolozoro_wusavunar.pdfIn PDF document text
    • http://lupuneruw.iblogger.org/sezegimipewekarujixibum.pdfIn PDF document text
    • http://tibetterrier.ru/89691003433itbv9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487194/normal_601ae1b524340.pdfIn PDF document text
    • https://gifolavetufo.weebly.com/uploads/1/3/2/6/132695571/2013928.pdfIn PDF document text
    • http://sdek-24.cc/where_to_watch_christmas_carol_moviepfb6q.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.thdl.org/http://www.thdl.org/TibetanIn PDF document text
    • http://www.nhncorp.comhttp://www.sandoll.co.krCopyrightIn PDF document text
    • http://fofeparulofiz.rf.gd/74514626446.pdfIn PDF document text
    • http://fasokefukolu.epizy.com/eu4_castile_colonization_guide.pdfIn PDF document text
    • http://gupevaworekupa.rf.gd/48761700257.pdfIn PDF document text
    • http://gureragiwoxoseg.epizy.com/lizibaxugakusoxela.pdfIn PDF document text
    • http://gidepajujida.rf.gd/assertiveness_cbt_worksheets.pdfIn PDF document text
    • http://pijedawometuzov.epizy.com/bimaxaxewiguxeguja.pdfIn PDF document text
    • http://pupowupavil.epizy.com/dojiwela.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://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlTibetanIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e53e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE53E 2960 bytes
SHA-256: d39960bfd59c8a79a39b2e6b8bca0fcf486de071cd3172157e94c5c67759f7f6
font_01_sfnt_off0000efc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFC6 5448 bytes
SHA-256: 168101c0e1ffeac4012f638c6b7ece5629ed427d7a6a5e8ff9a196072c072f75
font_02_sfnt_off00010230.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10230 9260 bytes
SHA-256: ab9be9c2041160f12a20931d9c243e5abe913975d85caf9c45b0324f1d2e1565
font_03_sfnt_off0001149c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1149C 2392 bytes
SHA-256: c4f775ae6718b6c39662095f3bb9953f0a3725184d7384ec50d1e126c51f2c1c
font_04_sfnt_off00011e3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E3A 2184 bytes
SHA-256: 9ec010204e37667b36ae333a72db7fbcf28458827e2b4b400ff4f0955782db73
font_05_sfnt_off00012862.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12862 13164 bytes
SHA-256: b296d22a3eb4d8d434c2b24fb79f87c20e346a450783cdc12c173dd13100c40d
font_06_sfnt_off00015494.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15494 18504 bytes
SHA-256: 230e6846a3e9fd69ec40219eb9a437a3a8858a2f689aaa037fbe507fdec41887

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