Malicious PDF — malware analysis report

Static analysis result for SHA-256 0666a5246a3bda13…

MALICIOUS

PDF

95.6 KB Created: 2021-04-07 18:15:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a14d190dc665e769fa7de1c26ca1bb35 SHA-1: 51d4d118f68d6dbdfc5d59cc5d5a0e9915c70d06 SHA-256: 0666a5246a3bda134c3c1edda319625232146644bf254c747fd00e5d681e72ab
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 0.9996

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://ponafet.ru/123?utm_term=e24+bollywood+news+app PDF link annotation
    • http://trikotoria.ru/92713419589bb3ta.pdfIn PDF document text
    • http://flash-sar.online/silovavotevaxeditsrk9w.pdfIn PDF document text
    • http://gelchlen.fun/assassin_s_creed_movie_in_tamil_tamilrockersvk1o5.pdfIn PDF document text
    • https://vipavogezeguw.weebly.com/uploads/1/3/1/0/131069860/sodakogafilosopu.pdfIn PDF document text
    • http://rulajamizap.getenjoyment.net/afaan_oromo_dictionary.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447640/normal_601faa829e0c3.pdfIn PDF document text
    • https://cdn.sqhk.co/wexunaveb/ifIjagf/forex_trading_strategies_for_beginners_youtube.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370057/normal_6006647eb581a.pdfIn PDF document text
    • http://lianhua.life/sacred_marriage_devotional3lg6n.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422643/normal_60401fc81203f.pdfIn PDF document text
    • https://senorori.weebly.com/uploads/1/3/4/6/134641151/accdd3ea.pdfIn PDF document text
    • https://cdn.sqhk.co/febowozefu/DjbOxhb/podupanavazofizitu.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://uploads.strikinglycdn.com/files/3bcbaf8e-26b9-4a6a-b536-211c7828e23b/nidodulutabusaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c34f02b6-375d-4a4a-80ce-c5edb2b6b4c0/kirolodetetudurisevopuve.pdfIn PDF document text
    • http://sisufovofow.atwebpages.com/what_was_the_progressive_era_goal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19a4c9bc-c546-41c1-b664-0939b5a5b819/67943085755.pdfIn PDF document text
    • http://xalixonawi.atwebpages.com/bncc_ensino_mdio_embaixa_site.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ed9772b-ccb8-453b-b54c-433573b34723/97292639512.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000105a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105A6 12204 bytes
SHA-256: 3182eb7d34c830afa109a4f629574d7183dbd8aecef934fc45746b17ba1e3e99
font_01_sfnt_off00012d7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D7D 5028 bytes
SHA-256: c2ba10898766a2b361dc3dec8d1a15283ebffe4761e2f9fc8b3be5f90f0e5ca3
font_02_sfnt_off00013eb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EB7 10016 bytes
SHA-256: 3ecf2374e8e11ad724b7a9824b77122a37cc488cf8ecf5c260e91c23e25e7406
font_03_sfnt_off000160d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x160D1 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

Open this report in the interactive analyzer, or submit your own file for analysis.