Malicious PDF — malware analysis report

Static analysis result for SHA-256 df79cf7c5d00923e…

MALICIOUS

PDF

69.3 KB Created: 2021-03-15 01:31:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 73e90024381675688783297ad74585f7 SHA-1: d849d15afe143e24a1ff2a5515f9aa116cb02561 SHA-256: df79cf7c5d00923ee01e1571f2488418be01c749c18dbba24e1586b094a2e28c
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 0.9992

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://lozipotod.ru/strik?utm_term=un+mundo+feliz+negret+books PDF link annotation
    • http://predouche.xyz/33666771482hbuam.pdfIn PDF document text
    • https://wotigutaz.weebly.com/uploads/1/3/4/3/134361511/ponubura.pdfIn PDF document text
    • https://towowiwegopute.weebly.com/uploads/1/3/4/0/134019464/pukilijivarom-vovejunakabejeg-vijelexosa.pdfIn PDF document text
    • https://mutebomex.weebly.com/uploads/1/3/2/7/132740724/fajok.pdfIn PDF document text
    • http://spainwow.pro/sexukope6le04.pdfIn PDF document text
    • http://paxejunon.mygamesonline.org/physiology_of_muscle_growth.pdfIn PDF document text
    • http://usechambre.xyz/burojilitapx7v9.pdfIn PDF document text
    • http://petrol-v-pol-price.site/winchester_gun_safe_26_gun_ts26-45_accessoriesvndod.pdfIn PDF document text
    • https://tudexabi.weebly.com/uploads/1/3/4/7/134770635/fa85f67644.pdfIn PDF document text
    • https://mirinojasuri.weebly.com/uploads/1/3/4/5/134588432/vusuvimob.pdfIn PDF document text
    • http://dkblogin-de.best/sawonepokazaxawexkafz5.pdfIn PDF document text
    • https://vejexuwelukilik.weebly.com/uploads/1/3/5/3/135340180/kutok.pdfIn PDF document text
    • https://fupefomaxoxaje.weebly.com/uploads/1/3/4/8/134897629/e5a96a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef3cd9ba-ed68-4d3b-8684-a9240652d0d8/neredekutoj.pdfIn PDF document text
    • http://tinasixubu.epizy.com/sadubabadupomu.pdfIn PDF document text
    • http://pufovipejofag.epizy.com/4607251198.pdfIn PDF document text
    • http://sejibuka.epizy.com/butefudiwadesa.pdfIn PDF document text
    • http://bexukavibume.myartsonline.com/ahmedabad_city_details_in.pdfIn PDF document text
    • http://wulibazosuxib.onlinewebshop.net/skewed_t_distribution.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05b5c880-780b-48f7-ab9d-10b637c01a83/12124034267.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37544a03-4704-4170-af23-6f5c0a22ce34/dubirobelerufojaramox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5d037b5-4a87-4b07-94a5-cb469acbbd49/why_wont_my_acer_computer_turn_on.pdfIn PDF document text
    • http://temolujipu.myartsonline.com/vurabasogexojekiwetuzefo.pdfIn PDF document text
    • http://rakumutebita.epizy.com/78144491006.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ea6f9bb-a591-4d91-b548-6f45c5b1b936/zoom_g1xon_guitar_effects_pedal_manual.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cea5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEA5 5264 bytes
SHA-256: 3b173474a5aa94c1b6dbe8a8fb2f6719db766d370777181bff303d098a1f626e
font_01_sfnt_off0000e081.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE081 11496 bytes
SHA-256: 57cb331a96ad4abd563ffa6865998ab9076d858cb860069c2535d4e0ec659122

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