Malicious PDF — malware analysis report

Static analysis result for SHA-256 175da157b0b16442…

MALICIOUS

PDF

72.0 KB Created: 2021-09-09 07:02:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-02
MD5: ac89238812625796d15b013c421fb85a SHA-1: aceb7761e929fbf4d425de024f7211c08c4352b6 SHA-256: 175da157b0b164425f4bb9df9695094923f787a363e7e475e8afd23140bf338c
126 Risk Score

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 0.9956

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://garglob.ru/uplcv?utm_term=food+of+the+gods+pdf PDF link annotation
    • https://lazdynumokykla.lt/userfiles/file/wulijagoka.pdfIn PDF document text
    • http://purofirstli.com/userfiles/files/xupaxir.pdfIn PDF document text
    • http://nakamurasangyou.jp/app/webroot/uploads/files/53409332768.pdfIn PDF document text
    • https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/n2ipohfhv1pbn2iu8er0io4hia/60759200284.pdfIn PDF document text
    • http://3e-machinery.ru/app/webroot/filesfiles/giniguzaxixojubaxinofel.pdfIn PDF document text
    • http://fishtech.org/uploads/userfiles/file/file/42154361635.pdfIn PDF document text
    • https://fertilizerproductionprocess.com/d/files/tojenizelimugibizusaga.pdfIn PDF document text
    • http://associatedreclaimed.reclaimedoils.com/userfiles/files/wegukapuzegunerotolemepo.pdfIn PDF document text
    • http://epodhajska.eu/UserFiles/File/53341415563.pdfIn PDF document text
    • http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/16138169f44053---76355813728.pdfIn PDF document text
    • http://caratow.nl/userfiles/file/14076144002.pdfIn PDF document text
    • http://cabanagarden.hu/editor_up/90701824883.pdfIn PDF document text
    • http://yuha.be/_files/file/kobedimesokikukakirovijak.pdfIn PDF document text
    • http://nktrading.qa/file/files/lexivugebalurefaxifonop.pdfIn PDF document text
    • https://rosedreamholidayhomes.com/ckfinder/userfiles/files/joxudotarejam.pdfIn PDF document text
    • http://djpress.pl/Image/files/15219401808.pdfIn PDF document text
    • http://mega-stainlesssteel.com/uploads/image/files/10433440551.pdfIn PDF document text
    • http://mstreatmentadvances.com/userfiles/files/33197179058.pdfIn PDF document text
    • http://mingzhicc.com/userfiles/files/2090125145.pdfIn PDF document text
    • http://cozycornerexpress.com/uploads/files/74404764604.pdfIn PDF document text
    • http://kamienneogrody.com/userfiles/file/damufavatememosed.pdfIn PDF document text
    • https://pushtypathshala.com/demo/aims/files/images/files/dumotovanovizoxedoruralu.pdfIn PDF document text
    • https://muachungbaohiem.com/uploads/userfiles/file/xixakalekukovifuwufas.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b93d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB93D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d154.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD154 10252 bytes
SHA-256: 01a5e495c307d2a6befff12093532cf2d37f1b8b993e9843e90c9ce7c558840d
font_02_sfnt_off0000e83e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE83E 16588 bytes
SHA-256: 5f51ce1358e6b53338767a9494e5e7b4595f534d8e9172e24ef4ed1ac246dec0

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