Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8cb4bf7f76252c5…

MALICIOUS

PDF

68.0 KB Created: 2021-03-24 09:27:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: e42b0e548925abd3e0cf886031c6eb6a SHA-1: 5779d78f372906eee1f0225e24aaeb1f5efd533d SHA-256: e8cb4bf7f76252c580ed22207eff9271936a66cfe08a4f345102e58b0841d0bf
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://nipisod.ru/wix?keyword=shadez+3+hacked PDF link annotation
    • http://tadurarawi.mypressonline.com/3358089105.pdfIn PDF document text
    • http://xifasiv.getenjoyment.net/snapper_rear_engine_parts_list.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408461/normal_603aec23a5554.pdfIn PDF document text
    • http://tuzogat.sportsontheweb.net/89258467337.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500447/normal_5fff6c8a322fb.pdfIn PDF document text
    • http://zonizubiro.getenjoyment.net/kokawoputoseluwiki.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471464/normal_5fee490da1eca.pdfIn PDF document text
    • http://xunarepozufuz.mygamesonline.org/famimenozivewagesos.pdfIn PDF document text
    • http://xosubowavenu.mypressonline.com/diruzowixarepoguv.pdfIn PDF document text
    • http://dawezedelofeda.scienceontheweb.net/sofezefa.pdfIn PDF document text
    • http://wegoluxetas.scienceontheweb.net/aeolian_processes_and_landforms.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d32ea47-7347-456c-9734-e0d58046a6db/can_you_buy_ocarina_of_time_on_switch.pdfIn PDF document text
    • https://691dfa98-c543-4342-b77d-a3d7fbf094aa.filesusr.com/ugd/d55835_e4e27559cebf4a9d9a2569ced60ace15.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4c799d7-3a1a-4a7f-a280-c7940610d12c/compilers_principles_techniques_and_tools_solutions_manual_2nd_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de6fb1e5-c89e-45ce-8daf-19ff3c749381/ritibozep.pdfIn PDF document text
    • https://d1b33a7b-cde1-45d4-bc15-d4d3b6236ac5.filesusr.com/ugd/1d64af_03299fa953f942468dfac286c1fabde1.pdf?index=trueIn PDF document text
    • https://1cf095b7-1d29-4152-b82c-7733cf7ba0c7.filesusr.com/ugd/c1de29_c42e78b38e4b46f8905ddf510fcfe7ec.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b111537-9e84-4628-8491-ac31784efc90/sotowunurekejo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32829998-9d41-4c3b-8199-7239ab38491d/11094966639.pdfIn PDF document text
    • https://9f5bcc56-a059-4f00-ae85-604acd6a3d2d.filesusr.com/ugd/ac9354_3212969d02004b16b73066889a8e3f40.pdf?index=trueIn PDF document text
    • https://eff7b67d-fef5-45b7-bcd6-ffb1b71d3a14.filesusr.com/ugd/b4c9df_2e9e3a51a95041afaf3196a7bc75979c.pdf?index=trueIn 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF6E 5100 bytes
SHA-256: b465110e1af7653eb44c3befaee305968493d4472c863251b2c946b15541826e
font_01_sfnt_off0000e0d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D2 10048 bytes
SHA-256: 2a2e1c7233336af41a9701fe30746c996c54ee9f63c11c33f2018659986adbb9

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