Malicious PDF — malware analysis report

Static analysis result for SHA-256 b118942cd5c2e3a4…

MALICIOUS

PDF

72.9 KB Created: 2021-03-20 05:49:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 276a3a6ae29b60cd421598287570ddbc SHA-1: b12d09f86ceab784f7ea9151789fecfc90f5c335 SHA-256: b118942cd5c2e3a49086e5428311020ea27742532083e88eb6538903c8b258e0
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://xezojetit.ru/strik?utm_term=is+usps+priority+mail+international+safe PDF link annotation
    • http://pokesebonoja.iblogger.org/araby_short_story_analysis.pdfIn PDF document text
    • http://defumemijiwof.22web.org/artificial_intelligence_darshan.pdfIn PDF document text
    • http://czecheducation.space/how_to_make_money_in_stocks_by_william_oneil_latest_editionh4lkj.pdfIn PDF document text
    • http://vobafoselalulor.mypressonline.com/93920543240.pdfIn PDF document text
    • http://bomawowaziwan.iblogger.org/47813796108.pdfIn PDF document text
    • http://tomandbxof.site/how_do_i_get_1.1_numbering_in_wordg9oey.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384480/normal_5fdc02d672248.pdfIn PDF document text
    • http://mufinofol.scienceontheweb.net/jojipex.pdfIn PDF document text
    • http://profyhouse.ru/5054445066k819q.pdfIn PDF document text
    • http://beautysale.site/gisufuteverirrpn8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480414/normal_604b1acd30ce3.pdfIn PDF document text
    • http://butuvaguji.iblogger.org/rutidikanibetonuzapamela.pdfIn PDF document text
    • http://artelamp.store/442747372773ejk6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/33b1a9e3-c189-4889-9c46-3036cd98c94b/hansel_and_gretel_movie_2020_characters.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dc515b0-4805-4eac-8637-526f09c1ac1c/fekaredivotasafopagafusaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1653a02-37b8-41ca-bfdf-c5db399690ad/dujuzosanibili.pdfIn PDF document text
    • http://gadojir.rf.gd/cellulitis_guidelines_idsa.pdfIn PDF document text
    • http://palexibibiw.atwebpages.com/semedegepinoxanamotomokeg.pdfIn PDF document text
    • http://zusapogadakafa.rf.gd/suzavonimatetinis.pdfIn PDF document text
    • http://xifofemixogo.rf.gd/25627917553.pdfIn PDF document text
    • http://juxudawalugevop.epizy.com/wuxulimidupiviposofe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/953771a3-1a46-43b6-9d1f-b94b8403963e/21412344318.pdfIn PDF document text
    • http://riruzozijin.rf.gd/36833937814.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cc3a3cc-be7a-4501-ab68-c7ded7d8ca67/vaxofurasut.pdfIn PDF document text
    • http://zefofipavefo.rf.gd/upfront_magazine_answer_key_is_big_tech_too_powerful.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_off0000e190.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE190 5088 bytes
SHA-256: 2b4e0ba3591ee4d544bd7f3729ef87c5207fbf9537d9f30a3b3adf9e03643df7
font_01_sfnt_off0000f2cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2CC 10312 bytes
SHA-256: 44b5d48cd91175fdbfd23c42d49192aa92f4848e91c2395f4bfba70b51ffb580

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