Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0ead37432e232ee…

MALICIOUS

PDF

77.0 KB Created: 2021-03-22 12:51:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 14fbc53f19d2e53ff164d449782b6dc1 SHA-1: 9a1270d04091a8d569e116d558052d8a83bbd2ef SHA-256: c0ead37432e232eee437fc63f6f8247cd6f33eea3bdeabed0225eb15b8f8dff0
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, a common tactic for phishing or redirecting users to malicious sites. The heuristic PDF_SEO_LINK_FARM indicates a large number of generated links, suggesting an attempt to create a link farm for SEO manipulation or to host phishing content. ClamAV detection and ML classification strongly indicate malicious intent, specifically identified as a phishing trojan. The embedded URL points to a suspicious domain, likely serving as the primary lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://midufefew.ru/strik?utm_term=how+to+play+dungeons+and+dragons+essentials+kit PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4463810/normal_5fcabd5c67702.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479705/normal_6007ff627c841.pdfIn PDF document text
    • https://cdn.sqhk.co/gitovera/hha8Lif/photo_effects_program_free_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376598/normal_5fdd8ced74dbd.pdfIn PDF document text
    • http://idealslimitalia-ufficiale.site/tree_of_life_pendant_silverho12r.pdfIn PDF document text
    • https://nogigeto.weebly.com/uploads/1/3/4/6/134665346/gapobunori_tagodakanazi_nupolebijo_kulejepojefezav.pdfIn PDF document text
    • https://gafewifem.weebly.com/uploads/1/3/1/3/131379815/noxaw.pdfIn PDF document text
    • https://cdn.sqhk.co/zejizoguzut/EQidbja/2104718888.pdfIn PDF document text
    • http://pycnidwzxc.info/wevizuguserowikabeselumvsc9l.pdfIn PDF document text
    • https://falibapop.weebly.com/uploads/1/3/3/9/133997194/bozaxumo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496810/normal_6053ad619db3e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416304/normal_6001f1e31dfda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420752/normal_600b353d908d8.pdfIn PDF document text
    • https://mesupajediruz.weebly.com/uploads/1/3/6/0/136051454/rapeweremelotal.pdfIn PDF document text
    • https://cdn.sqhk.co/miraroki/1U6sgg0/street_racing_syndicate_pc_download_utorrent.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450250/normal_602eda1887e4b.pdfIn PDF document text
    • https://cdn.sqhk.co/sugutomipu/Nchethg/lidexunizonusekuxu.pdfIn PDF document text
    • http://asia.kiwi/80654029599qjvzz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471275/normal_60103ff6e9342.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://a8a2d6b8-6248-42a0-90a4-e25e421c2e59.filesusr.com/ugd/f63f29_6b1ae252043c4b9785c9becd2bdb2362.pdf?index=trueIn PDF document text
    • https://bac920c9-bc39-49b5-b54b-64e1669887f8.filesusr.com/ugd/f84671_eca442a9fa2a498aa7f143b9acfc513a.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_off0000eed4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEED4 5348 bytes
SHA-256: 294c1a49b916bf870064e668c218c013f327f35473f15cd78c8bcb53793dc0ff
font_01_sfnt_off00010129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10129 11064 bytes
SHA-256: 9b3268cd584dc106789df962668cbe3cf9c30e8bff54470b6c774b20adf49de6

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