Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e6e13204213ea85…

MALICIOUS

PDF

33.6 KB Created: 2020-09-20 06:46:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 778f73b8a97e175f4c65d95a1a7104dc SHA-1: f7a33c9ebc23ec8d5b4bb31a627ecca61d949706 SHA-256: 5e6e13204213ea857b46b43c3c35fe68a25ce541f5b2d17b9ccb70bc6edf4545
154 Risk Score

Malware Insights

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

The PDF contains a link farm designed to lure users into downloading content, with one primary URL identified as a malicious redirector. The document body, though partially corrupted, contains the text "Mutants and masterminds cosmic handbook pdf download" and the malicious URL, suggesting a social engineering pretext. The presence of numerous embedded URLs and the ML classifier's high confidence score further support the malicious classification.

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.me/wix?keyword=mutants+and+masterminds+cosmic+handbook+pdf+download
    • http://files.smoorephotography.net/uploads/1/3/1/1/131163859/d32c4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://8b44f4ac-0205-49e5-8000-50166c7eabf4.filesusr.com/ugd/7ef0dc_fe95443f31bb4ecfb976bf06d27a9a6e.pdf?index=true
    • https://540d4da2-4fc6-446e-967b-fe2aa1167d39.filesusr.com/ugd/d01287_b470a8d9b34d44f49d2c610dc318b8f7.pdf?index=true
    • https://6531b5f5-8803-4fe3-b43f-0a8026500b2b.filesusr.com/ugd/9219f8_53c4691b15ad46f0851cbdec8fffe11a.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0429/5704/5916/files/gugulel.pdf
    • https://cdn.shopify.com/s/files/1/0484/1911/1070/files/77911373874.pdf
    • https://25950812-f3d6-4551-8492-9b568c4a905c.filesusr.com/ugd/c450b2_abe7b1b940ae473f92c216e68109d406.pdf?index=true
    • https://fe1f0ca4-4e52-4f21-ab09-eda1b3f72b4b.filesusr.com/ugd/2ac701_b8bae5ca3e124885911209716f7fbdb9.pdf?index=true
    • https://ab7d74ce-4ca8-49e3-b4e7-fd908c6a8aad.filesusr.com/ugd/440e29_f64702803a77443b872eac543ef9b39e.pdf?index=true
    • https://8e697c79-cf57-4cb6-8caa-ecf95b27970e.filesusr.com/ugd/46bfb0_8d0ece4b32194a668cf88527c70a8bc7.pdf?index=true
    • 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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000456c.bin
1b9963e728bfa825fd65b8d16c53dbaaa6cbb6842a1b92e4c5ceea5d055680b6
pdf-font-stream PDF embedded font (sfnt) at offset 0x456C 5696 bytes
font_01_sfnt_off000058ba.bin
c343a402be0e8895bd8d2aa8d64286cc023d6cfa6d88faa8b4585b59f6f14017
pdf-font-stream PDF embedded font (sfnt) at offset 0x58BA 9704 bytes