Malicious PDF — malware analysis report

Static analysis result for SHA-256 feaed7033ac389d2…

MALICIOUS

PDF

37.4 KB Created: 2020-10-29 23:22:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: ae6e39ef7ca9fb5c2ea2b61b313a67a9 SHA-1: 4f12298548455fd0c08041a233eccf51bdd86dc0 SHA-256: feaed7033ac389d23e7aff837a9e6390b4ebea32e6365aa675b8b3be0587ab65
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link farm and a primary malicious redirector URL, indicating an attempt to drive traffic to a malicious site. The document body text, though partially garbled, includes the malicious URL and a lure related to a movie title. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed for malicious redirection.

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://ttraff.club/123?keyword=hotel+transylvania+full+movie+2 In 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/c13eee00-36ef-4ca2-b53c-2c2ccfc68d16/bejepitezokabewum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0398/6184/6209/files/purposes_of_law.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4279/8250/files/voduwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/0515/2917/files/49558040308.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf9064eb-c1ec-4f9d-a4b0-9bf784453867/jungle_book_2016_full_movie_in_hindi_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8244/1410/files/64660722815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/5839/5843/files/44896643867.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba09fbdd-698e-4b60-889b-ab2b52cc23fe/10353877230.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/1421/5582/files/national_geographic_field_guide_to_birds_of_western_north_america.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/5390/9660/files/2020_honda_pilot_awd_owners_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5cdaf94-f441-464b-94ca-e9ca0b03c302/70009276024.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_off0000543a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x543A 5168 bytes
SHA-256: ae0bd17d43d22c97f6c3d32867289e3ad1b101023444e2b9290e93c05a941655
font_01_sfnt_off000065c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65C3 10400 bytes
SHA-256: c2951f25ee657afea524d9777b486ce0367d963e0d8ae7ba5a0b8a5ed5be1c25

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