Malicious PDF — malware analysis report

Static analysis result for SHA-256 a664c768972a0368…

MALICIOUS

PDF

77.1 KB Created: 2021-03-01 00:03:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: a1b96c7a33d4b85d8351e92551a3925b SHA-1: 752f53d93690921da6daf8364f81698021a7d97b SHA-256: a664c768972a0368367b1dcd62291989746526a01989f1dbc80e551c9796c42a
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 0.9995

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://jacksth.ru/wix?keyword=nissan+outboard+parts+manual PDF link annotation
    • http://beliyden.xyz/2193584636injow.pdfIn PDF document text
    • https://cdn.sqhk.co/mixubiki/highbPD/30428478869.pdfIn PDF document text
    • https://cdn.sqhk.co/xovinexesun/WiggiZr/police_scanner_free_app.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451760/normal_5ff3400dd5871.pdfIn PDF document text
    • http://ompala.store/639800124403ho33.pdfIn PDF document text
    • https://gulufoge.weebly.com/uploads/1/3/0/7/130776817/6348626.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487432/normal_60317779b3902.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371265/normal_5fd23739d58e5.pdfIn PDF document text
    • https://gajodiwu.weebly.com/uploads/1/3/4/0/134042407/edd93.pdfIn PDF document text
    • http://ladekepevij.mygamesonline.org/bhagavad_gita_translation_in_kannada.pdfIn PDF document text
    • https://cdn.sqhk.co/zumumolebajo/jAt1WQH/88003298958.pdfIn PDF document text
    • http://idealica-ordina.site/english_to_portuguese_translation_app_freedmd4l.pdfIn PDF document text
    • https://saniluje.weebly.com/uploads/1/3/4/3/134323688/ronabimosux.pdfIn PDF document text
    • http://pazifelurup.medianewsonline.com/seguxomasewageditego.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452853/normal_600a14079a000.pdfIn PDF document text
    • http://fakixigulidol.mywebcommunity.org/dikigarovuxiw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389366/normal_5fdf7e8d36f86.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/nowokil/96378139804.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/bawimufodama.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/75547096651.pdfIn PDF document text
    • http://mubodadekutaxim.atwebpages.com/fumiweromixitinimokux.pdfIn PDF document text
    • https://s3.amazonaws.com/sizabo/vosubijusukeje.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_off0000e9b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B4 5216 bytes
SHA-256: ec7a3ccad9f890b88b865c09ab417b0241b76fcc194add7654b69d9dc08dd607
font_01_sfnt_off0000fb52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB52 13828 bytes
SHA-256: c474b6cf559ccdced5852a152ad4255ec16b57893b60b271db4f1a3d1992ff3f

Open this report in the interactive analyzer, or submit your own file for analysis.