Malicious PDF — malware analysis report

Static analysis result for SHA-256 824ad7d7b655a618…

MALICIOUS

PDF

181.3 KB Created: 2021-03-31 09:50:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 35692d6e670b3a18c4f67f34302d8eba SHA-1: 798cdf7a319f69455acbce189b8ccf6990904151 SHA-256: 824ad7d7b655a61891f8351d3f9ab0525d2c63050f0a279b5eb998018f34305f
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 0.9995

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://gimoguvi.ru/award?keyword=40k+genestealer+cult+codex+pdf PDF link annotation
    • http://vulefuxudonad.22web.org/69271741086.pdfIn PDF document text
    • http://pawusofadezozep.22web.org/nuwovekenujamizosuno.pdfIn PDF document text
    • http://filuxunokenobud.mygamesonline.org/al_ahram_friday.pdfIn PDF document text
    • http://tiwigibafofovit.iblogger.org/31520050229.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/fulosobezur/harry_potter_y_la_camara_secreta_20_aniversario_salamandra.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/49892413010.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97d690e6-d319-4f04-a02a-519ccc298828/jotekirejilajone.pdfIn PDF document text
    • http://timavutiziv.epizy.com/garfield_3_tamil_dubbed_movie_tamilrockers.pdfIn PDF document text
    • http://gajibapudi.rf.gd/rikenorazanabik.pdfIn PDF document text
    • https://9cf5cc10-3c2e-4e30-ae6b-73ed7beed88a.filesusr.com/ugd/5c2b46_05f283c1ee3e4cce98e6a5809dc42b5b.pdf?index=trueIn PDF document text
    • https://0dea665b-aaaa-42f3-a52c-f86f0fd1efa2.filesusr.com/ugd/8b9728_70ab2527968749b494e32a5c6262268a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/efbdbbe9-d425-442b-9c52-082604975533/tezuligozimabojizis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87f57e17-99ed-4826-8194-19c288ff289b/sosazenudasidajipumomixel.pdfIn PDF document text
    • https://0e627107-309b-4451-a84d-e7064c41fccd.filesusr.com/ugd/04c368_fac3c8f6b52f4e27a1765f1a8f773d50.pdf?index=trueIn PDF document text
    • http://lewomunenuvi.myartsonline.com/68089168186.pdfIn PDF document text
    • http://wemurabasuxekux.rf.gd/72500559793.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/dell_latitude_5490_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/xozeb/nuliwineponojufivomefawe.pdfIn PDF document text
    • http://kokiralasido.epizy.com/89777685264.pdfIn PDF document text
    • https://a80c0318-1640-4d50-a016-df037fc402b9.filesusr.com/ugd/895bef_554143f4a2d24ef39d64643fcc1da057.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4367719-6009-47c3-b2a6-8be76ad2df75/what_type_of_lawyer_gets_paid_the_most_in_south_africa.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00029061.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29061 5592 bytes
SHA-256: 6bbf9d30d7e21749f7f895d5430c902420383ef1443b35ff95faebd081aed4f9
font_01_sfnt_off0002a38e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A38E 10416 bytes
SHA-256: 74869e7f521d75b5e4f6465ea06fb055c34fafd31728390ea726da9ce53a8b8d

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