Malicious PDF — malware analysis report

Static analysis result for SHA-256 9416e55e276b6518…

MALICIOUS

PDF

59.2 KB Created: 2020-10-11 16:09:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 8f4d9249e90c45dcfe1ae19929dc07e1 SHA-1: ad5caba4a708822cd7ebcc9fdaec46ed77801c48 SHA-256: 9416e55e276b6518fad9fb34c5f6772c6f6762365bafdc571f54fb75d82d3a63
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://ggtraff.ru/strik?keyword=mine+till+midnight+lisa+kleypas In PDF document text
    • https://site-1037156.mozfiles.com/files/1037156/39982737136.pdfIn PDF document text
    • https://site-1040984.mozfiles.com/files/1040984/kikozefe.pdfIn PDF document text
    • http://gizosad.bsupds.com/uploads/1/3/1/3/131379655/6342680.pdfIn PDF document text
    • http://files.chasenigleheart.com/uploads/1/3/1/4/131453807/00df6c235.pdfIn PDF document text
    • http://rajemif.rachelarmstrongauthor.com.au/uploads/1/3/1/4/131407588/gitizo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7348/5982/files/48979765269.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/5728/6820/files/the_piano_lesson_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0468/0715/4842/files/throttle_body_cleaner_vs_carburetor_cleaner.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5543/1323/files/water_death_knight_reddit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/9517/3541/files/presto_16_qt_pressure_canner_01755_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90a7323b-ac76-48c7-82b6-36c62be83cd7/6125529632.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb1adc98-7805-4969-91aa-31bbee9130d9/kopexuledugatibet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/229cbf25-00c2-4ebe-8c2c-84640ceabafc/vurufekirow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0dee341f-7c92-4c23-bb95-e89151aaadf7/solenodenosupaneteruvopeb.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_off0000ab3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB3A 5448 bytes
SHA-256: 46a8a3aec06ac4818e6e2038c0e68c790b04338424234e4891f4fc2bd4d86ea7
font_01_sfnt_off0000bda8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDA8 10000 bytes
SHA-256: 70b9093d863f3a568d8f488f4902e5979e40f7c9e4484e34f642312a4cd8a94d

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