Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d7020a78546c051…

MALICIOUS

PDF

77.7 KB Created: 2021-04-17 05:53:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 2e3b751be18dde24543633022ceb1095 SHA-1: 579640f04446569eff8c47e67c99610433e1080f SHA-256: 3d7020a78546c0513cf438de6ae3f84410508def8dd4c8226bd47aab2697fce1
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 0.9993

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://dafemum.ru/strik?utm_term=google+maps+python+api+key PDF link annotation
    • http://sexapixir.22web.org/70567448784.pdfIn PDF document text
    • https://tagizolatoz.weebly.com/uploads/1/3/5/3/135311358/c701acf8f4156.pdfIn PDF document text
    • http://jinevul.mygamesonline.org/xasezufopexiwuseripaze.pdfIn PDF document text
    • http://galufixagomedo.getenjoyment.net/actividades_aparato_respiratorio.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427295/normal_601b3984050c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481509/normal_604ce710dc06c.pdfIn PDF document text
    • http://finonit.mypressonline.com/how_to_use_apple_airplay_on_samsung_tv_without_wifi.pdfIn PDF document text
    • http://tolizidusinakil.22web.org/26692060471.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409246/normal_603b20f89fd3e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461516/normal_606025f9906fb.pdfIn PDF document text
    • https://sugelama.weebly.com/uploads/1/3/4/8/134898925/jogatodifirowef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369516/normal_6047e7b570429.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/radubozufiwo/92037203038.pdfIn PDF document text
    • http://gobavaduxa.epizy.com/gupatilumabesurunoterelif.pdfIn PDF document text
    • http://xivuzadozazul.epizy.com/84983586145.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/honda_pressure_washer_4000_psi.pdfIn PDF document text
    • http://xewujurobozum.rf.gd/74111929065.pdfIn PDF document text
    • http://waxobib.rf.gd/73317951106.pdfIn PDF document text
    • https://s3.amazonaws.com/fipijife/50785540943.pdfIn PDF document text
    • http://tiwemevi.rf.gd/xuxomovadivujuwiron.pdfIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/assignment_writing_jobs_in_pakistan.pdfIn PDF document text
    • http://fobavoji.rf.gd/relojed.pdfIn PDF document text
    • https://s3.amazonaws.com/gonima/camara_lucida_roland_barthes.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_off0000f442.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF442 5332 bytes
SHA-256: c4d3ce01895e62007502afe76190f64ade1b49905ee235a244584896cf1f0335
font_01_sfnt_off00010649.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10649 10404 bytes
SHA-256: 0a693c5b469538fc5c7a09872586f2b4d284edfe435b7d1a0ea10eddc5859401

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