Malicious PDF — malware analysis report

Static analysis result for SHA-256 182e243528411318…

MALICIOUS

PDF

80.9 KB Created: 2021-03-11 23:52:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: f1e1e8c307fee8e148aedf0ee018d78a SHA-1: 5829a9abc6ddf7cfa3bdece48c7e5fa683cfe33c SHA-256: 182e243528411318fa1ba24e4cbc95ef6f5e96a28a09ad0bef9677d81d3f6c9a
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The embedded URL `https://lozipotod.ru/wix?keyword=declaration+of+independence+test+questions+and+answers` is likely part of this redirection scheme, aiming to trick users into visiting potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://lozipotod.ru/wix?keyword=declaration+of+independence+test+questions+and+answers PDF link annotation
    • https://wafiludelo.weebly.com/uploads/1/3/1/4/131437380/24aa1a.pdfIn PDF document text
    • http://sakulog.sportsontheweb.net/94494080905.pdfIn PDF document text
    • http://befujukipepejem.mygamesonline.org/16773029508.pdfIn PDF document text
    • https://pekumovulimezel.weebly.com/uploads/1/3/4/3/134363026/zalivafebosefib.pdfIn PDF document text
    • https://nokavapeselodes.weebly.com/uploads/1/3/4/6/134638024/suriberuxafisu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478716/normal_60295c76d7d97.pdfIn PDF document text
    • https://datugabow.weebly.com/uploads/1/3/4/7/134745554/tademepitawesoxaninu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488336/normal_5fd1052ed8b92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479921/normal_6041f68ec4474.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491725/normal_602d87ef58e0d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483071/normal_5fe24b7451864.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/8deb65cf-5860-4a02-8ccc-a49e933a3158/nivokilibizixisag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c64a5e93-7b6d-4968-87ac-79706758ae1b/how_to_write_copyright_symbol_in_laptop.pdfIn PDF document text
    • http://zuputes.atwebpages.com/mixonazasinidibefe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5e56331-3c56-495a-891f-c2de58904435/2083728069.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4b85b37-6b5c-4483-a7e1-337d04c6f834/jesarobikirelarebuxide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50996381-4d59-4aed-96a2-4a6c73d9876b/reremub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f87fe149-9952-436e-a854-a3b633cf2a5e/best_2020_games_switch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5eb21c3a-4f35-48d0-848d-8864a665172d/87637364927.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cc5dcfb-d87b-47e6-a8b2-55155bf0cd77/4516436753.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efcb887a-bf2d-4aae-93fb-dd35aef69bd0/lilorukegegeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a0272bb-220c-4347-abce-8336d9a35a25/43641463687.pdfIn PDF document text
    • http://pazepoxi.atwebpages.com/batarowegulona.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_off0000ffcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFCB 5368 bytes
SHA-256: 2ff28d2e20c4305ade0ad3863826d4da69647339c8dce7b9fbf259223d7ceb2c
font_01_sfnt_off00011230.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11230 10600 bytes
SHA-256: cbd884d6e66acc5338f4e6c29838442489c48e3a5a4d9f660e321a8c121305bd