Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bef3064a3518c68…

MALICIOUS

PDF

73.2 KB Created: 2021-03-16 10:50:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 7af5859bc900e2a327772d487b8b3878 SHA-1: 94147336ff1c4b5ff6ec99c91ebe76419479d32e SHA-256: 9bef3064a3518c68c534b0b13d35468c2791afabb7d3c5a6e85b6c4a0bf0ceb4
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 0.9991

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://lozipotod.ru/wix?keyword=st+mary%2527s+ukrainian+catholic+church+ramey+pa PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387244/normal_604944cd2b760.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421209/normal_6045b8f6b0391.pdfIn PDF document text
    • http://crysety.xyz/sipujagowozikefozodol4fe4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465390/normal_5ffb8d568e546.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495254/normal_5feb4bde7cd9c.pdfIn PDF document text
    • http://indital.space/389137057509yhns.pdfIn PDF document text
    • http://ketousa.site/tempstar_furnace_parts_canada6ubve.pdfIn PDF document text
    • http://vomamafawib.scienceontheweb.net/5877211648.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490133/normal_60041bce2cc2f.pdfIn PDF document text
    • http://onlineeshop24.xyz/the_natural_rate_of_unemployment_is_equal_to_the_sum_of_frictional_plus_unemploymentvnmsn.pdfIn PDF document text
    • http://zawopim.mygamesonline.org/will_there_be_a_wheel_of_time_tv_series.pdfIn PDF document text
    • http://zagavexakagin.mypressonline.com/bach_minuet_in_g_minor_sheet_music_free.pdfIn PDF document text
    • http://50offstore.info/iomega_home_media_network_hard_drive_windows_10yvy0g.pdfIn PDF document text
    • http://hamsterbig.com/wash_machine_repair_service_near_me3vwk8.pdfIn PDF document text
    • http://canonsburglake.com/the_successful_match_2017_free_download7sx1u.pdfIn PDF document text
    • http://podeves.xyz/boxogaxiwoxedodizijat96whi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/risisipajole/96597643419.pdfIn PDF document text
    • https://ddf64d59-5240-4154-9987-17dfc28e22c7.filesusr.com/ugd/cec570_9e17a2fcd250452b90254d1a2c4f5dce.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/22051538901.pdfIn PDF document text
    • https://s3.amazonaws.com/dibedamoka/jeruruzaroxe.pdfIn PDF document text
    • https://0dd4521b-3e41-4083-9bcc-807cce03ae78.filesusr.com/ugd/cfe2e9_b2355d1c3a05486998df28ef0d171e7b.pdf?index=trueIn PDF document text
    • https://81da36f4-dec6-4bf4-836b-19ed67500659.filesusr.com/ugd/5fd5c1_e105c44a79564e3e80fb613be6f5d7d8.pdf?index=trueIn PDF document text
    • https://299bc67c-4c9a-44ea-852c-18f2d39dca40.filesusr.com/ugd/954c8b_00a7ba2633ea442b8f813161f78d99a4.pdf?index=trueIn PDF document text
    • https://4db61c00-1078-4917-8a1c-a2c1480eb6e0.filesusr.com/ugd/c94206_e3c36a5c8892455c9bb3262565608b40.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_off0000e02f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE02F 5476 bytes
SHA-256: 39ddc8e886cd24a433e055b614e489aaf295651fb78fe2f97028868fae2f9976
font_01_sfnt_off0000f2b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2B1 10712 bytes
SHA-256: 2ad23da2144d734b1494c251c294b9c1a5faba524bdabd52221a879b13c8421f

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