Malicious PDF — malware analysis report

Static analysis result for SHA-256 62d19380a19dd94f…

MALICIOUS

PDF

78.8 KB Created: 2020-12-24 19:25:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 643081dc3cba45b23f48389fdddda9cc SHA-1: 95c96d69d47a0eee96566184eb0f396ee00168fb SHA-256: 62d19380a19dd94fbfd08c7026d700857dda98552b5f0a05c78a3841a424f1c0
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file contains numerous embedded links, many of which point to a redirector service and are part of a link farm designed to obscure malicious destinations. The primary redirector URL is https://traffking.ru/strik?utm_term=daily+kpop+news+twitter, which is flagged as malicious. The document's structure and link distribution suggest an attempt to deceive users into visiting potentially harmful websites, likely for phishing or scam purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://traffking.ru/strik?utm_term=daily+kpop+news+twitter In PDF document text
    • https://cdn.sqhk.co/wewuxujudu/i5chhhi/best_cnc_simulator_online.pdfIn PDF document text
    • https://cdn.sqhk.co/samivegin/ijfiigc/talking_angela_hacker_2020.pdfIn PDF document text
    • https://gojudewusidaza.weebly.com/uploads/1/3/4/8/134888042/bc7763e692ac.pdfIn PDF document text
    • https://fitinunajixir.weebly.com/uploads/1/3/1/6/131637477/26353.pdfIn PDF document text
    • https://cdn.sqhk.co/bidomutarili/bChcfha/24334881792.pdfIn PDF document text
    • https://vibebivenef.weebly.com/uploads/1/3/1/4/131412032/mozonabipos.pdfIn PDF document text
    • https://notilapixoto.weebly.com/uploads/1/3/4/3/134397855/4318659.pdfIn PDF document text
    • https://cdn.sqhk.co/nafumozuwe/Nhfhaii/gexatunug.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/f72a127d-80fb-435f-9142-6f500c74ef1b/gta_san_andreas_data_files.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b32b613b-4495-4297-b4bc-ab8c1dd53d28/northdale_middle_school_yearbook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34fdbc85-a207-4f6f-8c9d-112af7fcc180/diferencia_entre_simbologia_electrica_europea_y_americana.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB2C 4356 bytes
SHA-256: e7690dfe3f113c03e5b78dc7678fe5d013975cbbcce8abe9c0c857a350afb36f
font_01_sfnt_off0000ea6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA6E 5072 bytes
SHA-256: a16e6fe68f7baf2d34c261049dc1b8ccc7677b401e2ea17d61ff3559a1b36fa1
font_02_sfnt_off0000fbd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBD6 2528 bytes
SHA-256: fc4021e369c7333a3e2698b65512cd5ca33aa0a3949f6c925ad90d66ca89f0ce
font_03_sfnt_off00010707.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10707 11324 bytes
SHA-256: 34d1228a1c5ac750781dc9f8279cb2363d8c2b67b642213dab27bd56d0c2e897

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