Malicious PDF — malware analysis report

Static analysis result for SHA-256 60c13eb20b58b14e…

MALICIOUS

PDF

77.4 KB Created: 2021-03-25 01:43:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 2ccefa8e1e2ca1fc44eb9082d07318b1 SHA-1: 5fa0a5cf75e684c4e82d369c32654787a8c407a9 SHA-256: 60c13eb20b58b14e6bb9db3a464dd72b9f99a5e873ff80e27900a60fb0270ac0
186 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the presence of numerous external URLs points to an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • 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 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.
  • 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://soxebez.ru/award?keyword=anestesia+geral+veterinaria+pdf PDF link annotation
    • https://golinogejus.weebly.com/uploads/1/3/1/6/131606227/wejefasi.pdfIn PDF document text
    • https://bukodebavuv.weebly.com/uploads/1/3/4/6/134657655/mutus.pdfIn PDF document text
    • https://cdn.sqhk.co/xotolodi/oSicPie/88446045523.pdfIn PDF document text
    • https://cdn.sqhk.co/leperanurosi/xPCgjjg/dark_riddles_download.pdfIn PDF document text
    • http://jaxagogilexet.sportsontheweb.net/jaxoxakuzilijuxesuziremak.pdfIn PDF document text
    • https://levunabul.weebly.com/uploads/1/3/1/4/131407164/zifetofat-kabotavulotos-zupoxubo.pdfIn PDF document text
    • https://cdn.sqhk.co/gixekoji/hcfieha/towopiriwekujaxonepitav.pdfIn PDF document text
    • https://cdn.sqhk.co/jemitaso/bZBGg22/zurigakezomebelolin.pdfIn PDF document text
    • https://lameperitilexi.weebly.com/uploads/1/3/1/1/131164355/jilinakubanana-wosazeke-vekijibopemajib.pdfIn PDF document text
    • https://cdn.sqhk.co/subilikiwi/gqghjh0/love_rosie_soundtrack_tunefind.pdfIn PDF document text
    • https://kojaresojew.weebly.com/uploads/1/3/4/3/134312518/a6878c3c0.pdfIn PDF document text
    • http://giwitap.getenjoyment.net/10233336811.pdfIn PDF document text
    • https://cdn.sqhk.co/tizesefetus/hBunlgc/sad_tik_tok_videos_status.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://041f977c-1598-48cb-b578-3d63f550c8ab.filesusr.com/ugd/524ae3_fff2ae4c822b43f6ad0ec80a7bf3adc4.pdf?index=trueIn PDF document text
    • https://29ce6865-365c-47c4-9f0a-635d6f965865.filesusr.com/ugd/0d6b77_8f72a460a57d4d738341d6d7ace16200.pdf?index=trueIn PDF document text
    • http://futikuzita.onlinewebshop.net/92792203672.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/411f3b8f-c678-42d0-af48-b6d85bae68f2/72657135693.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/818f730a-eb0a-49e3-a200-5a4c7482b52b/36145850779.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43c36d93-e663-4740-a985-58e8fd49f12b/wayne_dyer_quotes_on_happiness.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/719272e8-19ce-4c69-93a3-4166b0fcc93e/14166743955.pdfIn PDF document text
    • http://fusozevukatamir.atwebpages.com/30031138346.pdfIn PDF document text
    • https://a161ff94-1a6f-4367-b6f8-8e513a5e676d.filesusr.com/ugd/4c7633_ef040b1d09774f8f85cd555e2097fc8c.pdf?index=trueIn PDF document text
    • https://fad58b31-c538-4d3f-828d-7998eec853b9.filesusr.com/ugd/7e6083_0a6fa4a55e8a44a9acfdf8e71fcf0c2e.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_off0000ec82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC82 5256 bytes
SHA-256: 7bd9be22705b83a16c30bd88d4d10666a022220f9877361cbeb4f492817352d1
font_01_sfnt_off0000fe7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE7E 13044 bytes
SHA-256: 7814ae624e13dd0d01f5213d4d0da19a2b9c73d5bad8d325cc53ead4eabf90ed