Malicious PDF — malware analysis report

Static analysis result for SHA-256 b22f7e920dade389…

MALICIOUS

PDF

72.3 KB Created: 2021-03-17 20:24:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 1fc693339a298ca20a6c8b8572231e71 SHA-1: dd4e1c4621bc96905c896580e739a73e790f21a0 SHA-256: b22f7e920dade3890d66c0e6109312772a0d02c19364e839ef64667e4a9b492d
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 0.9998

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://xezojetit.ru/123?utm_term=shola+aur+shabnam+video PDF link annotation
    • http://rapawugi.22web.org/murders_on_the_rue_morgue.pdfIn PDF document text
    • http://tepugorotewole.medianewsonline.com/38955754811.pdfIn PDF document text
    • http://goxivomibivufuv.mywebcommunity.org/losawofebunepozogara.pdfIn PDF document text
    • https://zasevolonuto.weebly.com/uploads/1/3/5/3/135335071/jupiga_ladatuzujuve.pdfIn PDF document text
    • https://xabisipejerifo.weebly.com/uploads/1/3/4/6/134634854/bijujakifewove_nutowazexuwubuz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417046/normal_60353f689cd0c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489593/normal_60292e0811fd0.pdfIn PDF document text
    • https://dagaroxir.weebly.com/uploads/1/3/5/9/135973008/gagasotudarajonumik.pdfIn PDF document text
    • https://mozufidapu.weebly.com/uploads/1/3/4/0/134012608/c4b175e876136.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://04a80c79-134c-446e-801b-0c1635678e59.filesusr.com/ugd/5cebf8_88f8a236032c43fbade4f7a4542f3a07.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e592ff2e-ff11-4525-a391-6f4a7722bb6a/wonevipifabevopewoxumi.pdfIn PDF document text
    • https://a0f88182-e1f9-4a9c-ba22-d5ce004c6985.filesusr.com/ugd/2f3216_c1745daf0af547068ef2b7ee9208c179.pdf?index=trueIn PDF document text
    • http://xojazexodiwosi.epizy.com/42748301392.pdfIn PDF document text
    • http://gajitigigezujan.epizy.com/30398751477.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4962f080-d5ac-4750-b199-ea11b8ddef43/onkyo_tx-rz710_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57c2f90b-476e-4642-8997-e499f680847d/philips_universal_remote_code_for_arris_cable_box.pdfIn PDF document text
    • https://2aa89031-56ac-4de1-b828-aabe99840ec8.filesusr.com/ugd/cf14a4_3100e3018c594c69928a93d788306539.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdd98c6a-af3e-437d-8ded-e538d27c29b3/25672642282.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE6F 5168 bytes
SHA-256: 7738f2b9ea7b2f8a54a88e378e98879ede26692c3208dd2b1c8a4a9efc235439
font_01_sfnt_off0000dfbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFBE 11164 bytes
SHA-256: 9a0750d535a024261b342a02e6f86efd7f7ccfe44afe4837397d281415bc9507
font_02_sfnt_off000104a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104A6 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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