Malicious PDF — malware analysis report

Static analysis result for SHA-256 7051312a0e3f4cca…

MALICIOUS

PDF

80.4 KB Created: 2021-03-20 12:29:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 12193c82600d2065e83c271e9888928e SHA-1: 15760e5779519b2fc2565c78f2e97c57c6b44b00 SHA-256: 7051312a0e3f4cca177a6171d5a1037eb190692a8fecf72e294ee271197bc0e7
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://soxebez.ru/wix?keyword=virtuelle+rundg+c3+a4ngen PDF link annotation
    • http://zabolojisag.getenjoyment.net/arabic_english_translation.pdfIn PDF document text
    • http://fukiwurezopukof.mywebcommunity.org/14850398457.pdfIn PDF document text
    • http://ramosek.iblogger.org/langman_s_medical_embryology_12th_edition_free_download.pdfIn PDF document text
    • http://lodomujimujug.mywebcommunity.org/zoxagojiwamogasera.pdfIn PDF document text
    • http://xulodol.mygamesonline.org/independent_events_probability_examples.pdfIn PDF document text
    • https://pixasowurixes.weebly.com/uploads/1/3/4/9/134904492/666b576b98b00.pdfIn PDF document text
    • https://latobebesat.weebly.com/uploads/1/3/5/9/135993630/3457501.pdfIn PDF document text
    • https://tebobasuzojipol.weebly.com/uploads/1/3/1/4/131407082/nonepax.pdfIn PDF document text
    • http://rozogididibusar.sportsontheweb.net/cmn_101_uiuc.pdfIn PDF document text
    • http://kixurox.getenjoyment.net/exercise_ball_workout_chart.pdfIn PDF document text
    • http://fuwijumazawad.mywebcommunity.org/dikuzobifo.pdfIn PDF document text
    • http://tegeboxurogon.iblogger.org/bipolar_disorder_help_guide.pdfIn PDF document text
    • http://turosofatilez.iblogger.org/cuisinart_coffee_center_12-cup_coffee_maker_and_single-serve_brewer_instructions.pdfIn PDF document text
    • http://forumapu.iblogger.org/natob.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zogosugo.onlinewebshop.net/tijejaketekuf.pdfIn PDF document text
    • http://mesuwepuru.epizy.com/vadiwini.pdfIn PDF document text
    • http://vowaxuf.rf.gd/52300038671.pdfIn PDF document text
    • http://zorubanalu.epizy.com/31863238351.pdfIn PDF document text
    • http://ximawefab.epizy.com/baixar_para_android_apk.pdfIn PDF document text
    • http://salorejim.epizy.com/95978638186.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50d4b838-a63a-44d6-a1f4-a3e0da79bd9a/23971483734.pdfIn PDF document text
    • http://talavapupaniv.rf.gd/kipiwibakiwolufesod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca3523b4-715c-4dca-a564-7259d0a01497/58568278613.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e692.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE692 5148 bytes
SHA-256: d7adb64485b6b8f8d8b1dd5f0e3f431c3e367acefafe4a7929ac5706479796cb
font_01_sfnt_off0000f82a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF82A 11552 bytes
SHA-256: 8449d1a94083e0d5e30d3d8c61a27a837328ef405ad8ca08181d570aeadf1db8
font_02_sfnt_off00011f32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F32 16060 bytes
SHA-256: 503f5200e83b189a546b6c6e1d808633a9135186956fe76ff9bd78de3d91e3c6

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