Malicious PDF — malware analysis report

Static analysis result for SHA-256 706812951477da87…

MALICIOUS

PDF

78.1 KB Created: 2021-05-12 23:50:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: b86aa5759fc0531b8d15b9de489a6e2c SHA-1: df88f4a78e17d3861d4d277c4ca6c891073bafe6 SHA-256: 706812951477da87623b6a6e9056d86e4ed8497777fccbd865b9cc4104ec9596
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 0.9996

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://druttle.ru/strik?utm_term=do+you+have+to+sign+a+contract+at+planet+fitness PDF link annotation
    • http://storergoods.site/genesis_37_esv_bible_gatewayrv8t2.pdfIn PDF document text
    • http://kataeta.club/what_was_the_worst_day_in_the_stock_marketwfjsc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459469/normal_5fd75b3df0cf6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476001/normal_6023dddd720ec.pdfIn PDF document text
    • http://ndfnasg.xyz/nabaxiketugefikekeketj7tx4.pdfIn PDF document text
    • http://fionainthefield.org/cartoon_wars_blade_mod_apk_1._1._09b72i.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370737/normal_5fcbd5d77585b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376086/normal_6000806c32158.pdfIn PDF document text
    • http://inter-kalinka.ru/android_alarmmanager_source_codes3y2z.pdfIn PDF document text
    • https://fefedajukuda.weebly.com/uploads/1/3/1/0/131070841/f3fa92.pdfIn PDF document text
    • http://idealslimitalia-oficial.site/oh_danny_boy_deutsche_bersetzung9vesj.pdfIn PDF document text
    • http://micrometer25bill.site/lord_of_the_flies_chapter_11_quizizzlwhtv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451930/normal_5fe266168289f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380871/normal_601d96f2d9d7e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382197/normal_5fe394d0a9e14.pdfIn PDF document text
    • https://fazidojerax.weebly.com/uploads/1/3/5/3/135328618/64af94e362aee.pdfIn PDF document text
    • https://pabixiwirixe.weebly.com/uploads/1/3/1/0/131071256/3892310.pdfIn PDF document text
    • https://dewixazupeteti.weebly.com/uploads/1/3/1/4/131455636/lozelijadesimod.pdfIn PDF document text
    • http://stroy-level.ru/550940085697m931.pdfIn PDF document text
    • http://steblin.pro/lesodokujetomwyrul.pdfIn PDF document text
    • https://muvozipiga.weebly.com/uploads/1/3/5/3/135391344/2909426.pdfIn PDF document text
    • https://revijokatise.weebly.com/uploads/1/3/3/9/133999222/345831.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000f135.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF135 5436 bytes
SHA-256: adebd993f449f8ba93e8cfbb51fff149f4ccbc961959b2a3781aa7888d5e5828
font_01_sfnt_off000103ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103CE 11468 bytes
SHA-256: 8b275ae13b068c51b7fd969dcf891d904d5669104053a7a6c80e48b5fbbe0eb0

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