Malicious PDF — malware analysis report

Static analysis result for SHA-256 479f904baf937e1b…

MALICIOUS

PDF

42.5 KB Created: 2020-08-29 19:45:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 10990a2fdcac75f29ce8b10a14056dda SHA-1: f727967de8e68d93033e3cbb1df5dcdcc32c7fea SHA-256: 479f904baf937e1b3a6748333e6f66d5e1f6762c995bbe18895cf9b246ffb86d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a PDF link farm. The primary URL, 'https://ttraff.ru/wix?keyword=pokemon+go+hawaii+map', is flagged as a known malicious redirector. While many other links point to benign Shopify or static.usrfiles.com domains, the presence of the malicious redirector and the overall structure suggest a malicious intent, likely related to SEO manipulation or hosting further malicious content. No scripts were extracted, limiting the analysis of direct execution capabilities.

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.ru/wix?keyword=pokemon+go+hawaii+map
    • https://cdn.shopify.com/s/files/1/0438/6209/8085/files/54504116292.pdf
    • https://cdn.shopify.com/s/files/1/0436/5543/0309/files/xogifirariwatikeja.pdf
    • https://cdn.shopify.com/s/files/1/0435/5925/6225/files/carbon_cycle_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/3430/3912/files/attestation_employeur_pajemploi.pdf
    • https://static.usrfiles.com/ugd/3bca44_5fd84a0516d64ecb993bcc2458c6cdec.pdf
    • https://static.usrfiles.com/ugd/b8c837_3a8fff1eccea478d9856e1cd9f8a6513.pdf
    • https://static.usrfiles.com/ugd/b8c837_c44f3fd8d7484c5a90e2b946249492ac.pdf
    • https://static.usrfiles.com/ugd/b8c837_97bb5a741a0e419a82bba4f1c117ca3a.pdf
    • https://static.usrfiles.com/ugd/b8c837_956b4bcb422545049caddb2fe0b7163f.pdf
    • https://static.usrfiles.com/ugd/0c41e7_c2c54f190182435abda221853784c2ed.pdf
    • https://static.usrfiles.com/ugd/b8c837_7cd07d6a290341e78b8e927004c7b71b.pdf
    • https://static.usrfiles.com/ugd/b98abb_a2ef8022d33b40be93b16adbdd2659ca.pdf
    • https://static.usrfiles.com/ugd/b8c837_21f6cabfffad41a5b9899de05f52b16f.pdf
    • https://static.usrfiles.com/ugd/b8c837_d7b4058e02c947d09a2cf0f90eecc184.pdf
    • https://static.usrfiles.com/ugd/b8c837_1b0dcf6e002d4b3ea29d441e04dc2743.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006776.bin
ba13a48732f4c22504d42a1a79327676704eb231cc54ad777fd1c7daff51779f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6776 5084 bytes
font_01_sfnt_off000078b3.bin
8bef745e4f6dedb39ffa657b52e14c98b969bec280bea6606faf9bec86d9d0d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78B3 10892 bytes

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