Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3507492a581c522…

MALICIOUS

PDF

74.1 KB Created: 2021-03-27 10:46:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: bc7e208e08b63dd0945f7ec061a98321 SHA-1: b7b3e8b1e9cf56d39d54bd5b3c079ec213237b2f SHA-256: d3507492a581c5223df479022e55a3323bcf69a94e0e0aa6d5ca4c3c528b1e4a
126 Risk Score

Malware Insights

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

This PDF document is identified as malicious by multiple heuristics and a machine learning classifier. It contains numerous embedded URLs, suggesting it functions as a link farm designed to redirect users to potentially harmful websites. The presence of external URIs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic indicate a phishing or scam attempt. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://ponafet.ru/wix?keyword=work4illinois+class+search PDF link annotation
    • http://ravapusevuj.iblogger.org/96215074232.pdfIn PDF document text
    • http://findattime.com/tofovaromorowokix2ixv.pdfIn PDF document text
    • https://cdn.sqhk.co/mogudekusab/figJOIk/small_pig_breeds_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/mepapogivoma/wjdECjf/electrical_code_conduit_fill.pdfIn PDF document text
    • https://cdn.sqhk.co/muzubasiwu/ZmEMqQ3/rome_total_war_barbarian_invasion.pdfIn PDF document text
    • http://prodson.space/xujaso1q2fj.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/Gijjhq7/vepoxonojimugapotap.pdfIn PDF document text
    • http://reduslimitalia-oficial.site/best_of_as_bill_sees_itqr4fr.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e108c0fa-8e70-4110-aab7-e0d30777705f.filesusr.com/ugd/d9966b_0755a54303b54e289d5851d88b09910f.pdf?index=trueIn PDF document text
    • https://5a2ada08-5b6c-402a-b0df-3636415b461e.filesusr.com/ugd/434ae6_4671609eeead46ddbe7b7c89687ed0ad.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/257ab293-386e-4a44-a709-f02d790e758e/8058308509.pdfIn PDF document text
    • https://315736c7-1030-4200-8d24-05c9f4951019.filesusr.com/ugd/d19ca0_534889113a7f43f5b74efd60a2ed7423.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/08b6d936-f538-4f0c-b983-d56318d8cb7b/83493356611.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e012533-0f1a-488a-b53b-4b0e9e477c70/what_does_a_black_shark_tooth_mean.pdfIn PDF document text
    • https://da89e6ec-52f9-4c28-8de8-447a2e923c0c.filesusr.com/ugd/5e5b2a_2709da4520a848be99bf3974014b4e34.pdf?index=trueIn PDF document text
    • https://8eeb1f0a-0cdd-4c66-98a4-83777b49fb54.filesusr.com/ugd/64f9d2_c8b9eb4a3a8a47cdbec66bbb04b541e1.pdf?index=trueIn PDF document text
    • http://mibavipef.epizy.com/goxujepejed.pdfIn PDF document text
    • http://kizosala.epizy.com/sutezujuto.pdfIn PDF document text
    • http://mapiwenasadig.rf.gd/timeline_template_for_middle_school_students.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ad8da6a-9c35-4f6a-ae32-f2bb205ff899/44392520661.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35c4c341-cd9e-444f-ba50-93f36b73d9d2/tree_of_life_bible.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_off0000e536.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE536 5052 bytes
SHA-256: d7c25c059f56da022360f1752d5ef917712dbec99257053feb9b75f92c14ae0a
font_01_sfnt_off0000f677.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF677 10688 bytes
SHA-256: 031238d4dff8f332ece376dd1264a28f4669dd6b0b636d5655538394f76ca486

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