Malicious PDF — malware analysis report

Static analysis result for SHA-256 58b6212099999e2b…

MALICIOUS

PDF

79.0 KB Created: 2021-03-10 08:10:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: dea0c2011bd218fe879f763abdad67a3 SHA-1: 3baa2af1172e17a09b2028faeb4675cdb17a4952 SHA-256: 58b6212099999e2b51e423236ff98b37183dd71299f18b8dbb4003623c719cd4
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://crophysi.ru/aws?utm_term=how+to+type+up+a+rental+agreement PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4426972/normal_600361d7d4c26.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383807/normal_604846c736e83.pdfIn PDF document text
    • http://wawewifebobojum.22web.org/malas.pdfIn PDF document text
    • http://xivixevikid.iblogger.org/zamufugexedomef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422918/normal_5fe83e64a5989.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/f66f4e5b-45c8-4e8e-9775-96a6d38ccf24/duzuduzufusame.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c31dd2d2-2aa3-41d7-9929-cadfa6d7568b/can_you_get_procreate_on_windows_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8871b42-59ac-45c2-bfed-fd35a0b13b9f/intermatic_timer_switch_st01.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/12981712625.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/801bfccf-7e3c-4564-bdae-9202a525bcc1/wudovidu.pdfIn PDF document text
    • http://dumatefofexulen.epizy.com/angry_birds_2_new_version_hack_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e6cf3e2-a430-44a0-99c5-571818027c21/vopumasigikowesulaped.pdfIn PDF document text
    • https://s3.amazonaws.com/jopomodilamego/netflix_app_for_panasonic_smart_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/sajezife/sixegelisotimuwakazuw.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/xisaxekugumijulimokig.pdfIn PDF document text
    • http://zopusawonomiwi.rf.gd/1101568865.pdfIn PDF document text
    • http://petitezu.epizy.com/pumps_handbook_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/activity_log_android_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/832c0e43-22c0-4b67-904c-e397703d7218/primer_curso_de_contabilidad_elias_lara_flores_26a_edicion.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec10ddf6-3db1-405e-a51d-5dbb92d46a08/16138968161.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED92 4952 bytes
SHA-256: 92e36c28eda4c212276f1a9157420187056a926f16b89fedeafd93cc4daa3c9b
font_01_sfnt_off0000fe6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE6B 9816 bytes
SHA-256: e899c67129b8844f4a04005367f4fbd16e41467a4f892eff221a2b064f8cea54
font_02_sfnt_off00012007.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12007 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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