Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ff3dbc47e1ca7d9…

MALICIOUS

PDF

76.3 KB Created: 2021-03-14 21:09:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 662a4d4a66436fa19e55051ee9a8c906 SHA-1: 48f86e8bd87b7437bf352c2aed1b319397af0f69 SHA-256: 7ff3dbc47e1ca7d956119c2eafe63c0670bc26834965ae0341379cef8a8440ac
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged as malicious by both ClamAV and an ML classifier. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users. The primary URL, 'https://jumiwimov.ru/wix?keyword=agama+car+launcher+apk+pro', indicates a lure related to a car launcher application, likely a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jumiwimov.ru/wix?keyword=agama+car+launcher+apk+pro PDF link annotation
    • https://bunivuwavimi.weebly.com/uploads/1/3/4/7/134706582/jilamitixe_fisez_fozonefeb_zakufefepu.pdfIn PDF document text
    • https://koruguliduni.weebly.com/uploads/1/3/4/8/134896859/dolawejef_gopuwobi.pdfIn PDF document text
    • https://lisogawe.weebly.com/uploads/1/3/5/3/135312855/tases-fegenuwa.pdfIn PDF document text
    • https://begakidiwadagav.weebly.com/uploads/1/3/1/3/131397934/kerunoka-wazetigeb.pdfIn PDF document text
    • https://jevogivufete.weebly.com/uploads/1/3/0/7/130738845/votopoveruwez.pdfIn PDF document text
    • http://nakalabaxis.mywebcommunity.org/forrest_mims_555.pdfIn PDF document text
    • http://lubevos.scienceontheweb.net/maven_tutorial_udemy.pdfIn PDF document text
    • https://cdn.sqhk.co/vitimosugu/jeaQ8je/rufegezobibabutinakovu.pdfIn PDF document text
    • https://cdn.sqhk.co/sileluzorupo/vx7NicM/jezoju.pdfIn PDF document text
    • http://lazirawolewok.getenjoyment.net/21934908153.pdfIn PDF document text
    • http://jekefidaz.mygamesonline.org/49152102861.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/1ef43974-7c8a-48bb-9d36-6bc9f2482d29/78230966734.pdfIn PDF document text
    • http://xezaretidatoro.onlinewebshop.net/breeding_show_guppies.pdfIn PDF document text
    • http://kopolug.myartsonline.com/official_monopoly_rules_get_out_of_jail.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb57ba40-ba00-4954-a648-5f5aacb924f7/how_to_reset_heater_pilot_light.pdfIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/taxomogunakafijaxiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2d0b205-71f9-4f8b-a442-49af481754d8/diziwakageru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fffe163b-86d8-4be0-8766-4c1785da044f/65882348266.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/356f769b-d733-4650-b7fc-8315f50bc0d5/73913075183.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/fajovadelariko.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_off0000ec94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC94 5220 bytes
SHA-256: b3acfe7fb27c4cffff9dd80c6bfc44d1b9644127379e7ee953e89bc11481b78c
font_01_sfnt_off0000fe30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE30 11108 bytes
SHA-256: b782f9cfe682fca219abebc90f83b1aa36ed1575becc37936231b77850789049