Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cbd77de05166960…

MALICIOUS

PDF

70.9 KB Created: 2021-01-04 02:29:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 9c31f1603926d843da18607b7b745312 SHA-1: b410ed0fb99065813ab5a1a7e675826d4c16a4ad SHA-256: 7cbd77de0516696049200e9cbced7512897cedfa7077425463ed9949fc29224e
284 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was flagged by multiple critical heuristics, including PDF_MALICIOUS_REDIRECTOR_LINK and ML_NYX_PDF_MALICIOUS, indicating malicious intent. The document body, though truncated, contains text related to 'Security camera mod 1. 7 10 minecraft' and includes numerous embedded URLs pointing to link farms and redirectors, suggesting it's part of a phishing or malware distribution campaign. The SE_CLIPBOARD_COMMAND_LURE heuristic indicates the document attempts to trick the user into executing commands.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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.
  • 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://traffmen.ru/wb?keyword=security%20camera%20mod%201.%207%2010%20minecraft In PDF document text
    • https://cdn.sqhk.co/patemugimej/gj8f2ge/2850832161.pdfIn PDF document text
    • https://rajexomogalifi.weebly.com/uploads/1/3/4/8/134891851/c12d2fdf80471.pdfIn PDF document text
    • https://cdn.sqhk.co/bojojiweg/2jbJrbd/homes_for_sale_by_owner_drums_pa.pdfIn PDF document text
    • https://welajewovire.weebly.com/uploads/1/3/3/9/133999455/litunax.pdfIn PDF document text
    • https://jezaxegare.weebly.com/uploads/1/3/1/3/131380636/dcf45.pdfIn PDF document text
    • https://cdn.sqhk.co/rasufizo/VFijkWV/microban_sanitizing_spray_citrus_sds.pdfIn PDF document text
    • https://rubebukani.weebly.com/uploads/1/3/0/7/130740450/5d52f0dc97be.pdfIn PDF document text
    • https://giruveme.weebly.com/uploads/1/3/4/4/134480937/dilokazevulaxet.pdfIn PDF document text
    • https://cdn.sqhk.co/jenotefi/ehhjdjb/mavuluvujede.pdfIn PDF document text
    • https://budojidotepaso.weebly.com/uploads/1/3/5/3/135312143/caf16b95.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/d409dde8-3c86-4e3d-a976-00ea4ea93578/2015_lexus_is250_f_sport_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e99f92a1-25df-4a30-b62d-f2e13fcf1041/felegujen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0810e0b4-845f-45c4-a3de-e85d350056fc/44656798409.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24ec6a16-5933-4712-b5eb-4f9d3fcb1119/tedojovutevituvozovol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55aca814-9906-4c7a-8fee-33768ceaf5cf/xopixumibiwixikejev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cace3d5e-c394-4e3d-9955-60230f3c0803/3674798018.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_off0000d8de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8DE 5468 bytes
SHA-256: e1bd485f5c3e752d68890be1376e628f5bf89a7e458f4da6df8986ec6466a0bc
font_01_sfnt_off0000eb81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB81 10324 bytes
SHA-256: 4d92d4176a1fe7a8cbdbde565c5e5b9320c42c3cd41f747eae46ac1f72290d4f

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