Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ca3cedac7aa29d2…

MALICIOUS

PDF

39.0 KB Created: 2020-10-30 01:42:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 1c54b4fcd1111af83f8795b74241c568 SHA-1: 2e51b48a288588d4348c5f3b070552e7f6571424 SHA-256: 6ca3cedac7aa29d2d30f0e02af0c2d22e7667199825423bb748387586699f634
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://cctraff.ru/strik?keyword=dell+inspiron+570 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374362/normal_5f8c92503ebf7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379379/normal_5f8e7f46c2882.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421943/normal_5f98fa10d321b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426974/normal_5f987fc09a45c.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/dc29b9d8-3b04-455c-bf8a-a9598cb58f85/xitomoxitimelebomezugez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20c1bfed-26c9-4759-a9f3-eb258131e5d9/74529764551.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7234/8870/files/80931094776.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc4e4911-42ba-4d4a-9ed1-5cfc98bfc226/jefizutuxasarojanolo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99d00d17-7789-40f2-8203-a5cf7e6f255b/articles_of_partnership_establish_brainly.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a861dcd3-8822-4fb9-b0ad-3aa4a9fdab67/hunter_x_core_rain_sensor.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/32382477387.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_off000058d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58D8 4948 bytes
SHA-256: 5c96678f145ffeea8450cdfe938647ad00bc8409188be074abe924c8a42b3f71
font_01_sfnt_off000069d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69D2 11044 bytes
SHA-256: 6c10762c6f76729c044812bc1ba46425d08b296da21551a933be11fd647c1535

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