Malicious PDF — malware analysis report

Static analysis result for SHA-256 7593c3a8e68e74dc…

MALICIOUS

PDF

76.3 KB Created: 2021-03-31 19:26:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 23d69365cb04a2d1367201c81b397bbc SHA-1: 72311d98cfd25556b40baf2be8603801a866c7be SHA-256: 7593c3a8e68e74dcc783951e270116f8d2b780085e220f96875ec74864656794
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 0.9997

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://jacksth.ru/award?keyword=score+de+bishop+tableau+pdf PDF link annotation
    • http://lotto-investclub.com/centrelink_forms_nomineegbzbj.pdfIn PDF document text
    • http://kofoxirozagitu.iblogger.org/harta_apuseni.pdfIn PDF document text
    • http://biomaniix.website/how_to_use_a_functional_trainerkv6fm.pdfIn PDF document text
    • http://onlajn-kassa.ru/xfinity_alarm_system8jeqz.pdfIn PDF document text
    • http://idem-peshkom.ru/728158761886nj4u.pdfIn PDF document text
    • https://kaxesudinebeg.weebly.com/uploads/1/3/1/3/131379803/ba1f272.pdfIn PDF document text
    • http://smm-target.ru/what_does_the_egyptian_eye_meanz4eix.pdfIn PDF document text
    • http://ledaxobakisufi.22web.org/acer_aspire_5733z_battery_price_in_bangladesh.pdfIn PDF document text
    • https://bitokulizawefe.weebly.com/uploads/1/3/4/6/134684274/6142350.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369657/normal_601f18b480a53.pdfIn PDF document text
    • https://lelibajoterudu.weebly.com/uploads/1/3/4/0/134042739/3158503.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373985/normal_6062c92c43d10.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412173/normal_5ff7ff6510dbb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wosoremozojofam.epizy.com/pomuwuvapuzawajoremov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67560383-9644-4630-ab8c-d7e657b85d57/moto_g_3rd_gen_price_in_pakistan_olx.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c546d9d8-b024-4c85-8225-601305cdf6bc/54965601479.pdfIn PDF document text
    • http://zigevunagenape.epizy.com/bewaxewiduvumuj.pdfIn PDF document text
    • http://baromar.epizy.com/tulezevirapebabuguf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a1f06bd-a302-400a-af90-52f8f2324d6f/nasoluwadazizosunenajasek.pdfIn PDF document text
    • http://zufavubop.rf.gd/adobe_virtual_printer_free_download.pdfIn PDF document text
    • http://kumoxamumusuxa.rf.gd/alcohol_120_windows_10_free.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7AF 5488 bytes
SHA-256: ee4219b5c6119dff8cb48e34083fbcf2205aa48ad2c42e1557dd8ac3c97f677f
font_01_sfnt_off0000fa4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA4A 12376 bytes
SHA-256: 8e965cf4af0e9378dd4ec363df3afd23ec146371df38bcfe7d8fd1c271680678

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