Malicious PDF — malware analysis report

Static analysis result for SHA-256 83956a775e06ef4c…

MALICIOUS

PDF

76.7 KB Created: 2021-05-05 14:12:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 8114275f06e58da5fd235f3c33cabb9f SHA-1: 92552925735e3a58c634f10ff77928722e6c7ffd SHA-256: 83956a775e06ef4c77f6b723810f376c1886aa6c8acf042729003c0845557232
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 0.9997

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://resalured.ru/strik?utm_term=cuisinart+2+quart+ice+cream+maker+recipes PDF link annotation
    • https://vinozesuwoda.weebly.com/uploads/1/3/4/6/134685541/sizejodakigis.pdfIn PDF document text
    • http://bobujopolodusol.mygamesonline.org/gadejugelewesefuzanejobuf.pdfIn PDF document text
    • https://cdn.sqhk.co/waxolulum/fWStK1R/talk_home_international_call_rates.pdfIn PDF document text
    • http://ujjjrrrrr.space/rizozedirozapapununo7ve0z.pdfIn PDF document text
    • https://kotasixunepa.weebly.com/uploads/1/3/0/7/130776076/fibezewemefuzi_dekelaw.pdfIn PDF document text
    • https://zekupepub.weebly.com/uploads/1/3/5/9/135992873/sawuzibakimumev-faretojis-wekede-somibeg.pdfIn PDF document text
    • https://lanujedajifita.weebly.com/uploads/1/3/1/3/131382078/xidebuti.pdfIn PDF document text
    • http://xisumagogali.getenjoyment.net/printable_bubble_sheet.pdfIn PDF document text
    • https://cdn.sqhk.co/mogowepuw/ziaiaig/97957093819.pdfIn PDF document text
    • http://salopkisa.website/4019061588qr9ya.pdfIn PDF document text
    • https://cdn.sqhk.co/jegivoziba/ligjaPv/69257845953.pdfIn PDF document text
    • http://stikc.xyz/affiliate_marketing_in_nigeriabwici.pdfIn PDF document text
    • http://classicalnaturally.com/26202062212thy52.pdfIn PDF document text
    • http://j3vnci4.xyz/rifomexawezadozos0z4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://winimoviwimi.myartsonline.com/xowos.pdfIn PDF document text
    • http://sisuraregimu.rf.gd/8070812233.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce50a316-5fef-4679-a476-834404341d15/savawuzasesivuf.pdfIn PDF document text
    • http://fefefekarut.epizy.com/99699385076.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9475c77a-770c-4088-87b2-56f4ed91053d/womuxuxatawifonoto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1018ed34-af60-4a8c-b339-e7540a350934/mesetusekajididogako.pdfIn PDF document text
    • http://vujijemu.atwebpages.com/81520829033.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_off0000ee29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE29 5276 bytes
SHA-256: 749d9c48d693d48de5264809791edbd9385d00101e64fbcf2524140f04937393
font_01_sfnt_off00010008.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10008 10988 bytes
SHA-256: 14c9618435a6db96f0d6c11e8719d14372ac2be30e411820ef6cd3560d9fd5e0

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