Malicious PDF — malware analysis report

Static analysis result for SHA-256 7123e95733c84dfb…

MALICIOUS

PDF

95.5 KB Created: 2020-08-03 03:12:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5df449a26913ea452535baf1fc6bf19d SHA-1: ae3b49bd7702f4e18d674170535fe96f9126fbfe SHA-256: 7123e95733c84dfb0962b4d5169f98af8bb133c5a4b3ad7e24098d995e6ad3be
154 Risk Score

Malware Insights

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

The PDF contains numerous links, with a critical heuristic identifying a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=ffxiv+the+blessed+treasury'. The document body, though heavily obfuscated, appears to contain this URL as well. The presence of many external PDF links suggests a link farm or redirection strategy to obscure the ultimate destination.

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.com/pify?keyword=ffxiv+the+blessed+treasury
    • http://files.beardedmaverick.com/uploads/1/3/0/7/130739043/fosutetos-rokedosuj.pdf
    • http://files.mrguidrydramaclass.com/uploads/1/3/1/8/131858540/9180450.pdf
    • http://files.blueridgechildrensmuseum.org/uploads/1/3/0/8/130874238/zovumix-lutorenip.pdf
    • http://files.agfxinvestments.com/uploads/1/3/0/7/130739742/mofataj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/7852/4832/files/65013064011.pdf
    • https://cdn.shopify.com/s/files/1/0432/9200/0406/files/rotarutilisifikomuwebodat.pdf
    • https://cdn.shopify.com/s/files/1/0434/4391/2856/files/21953910848.pdf
    • https://cdn.shopify.com/s/files/1/0434/3182/1473/files/mixesutenutulone.pdf
    • https://cdn.shopify.com/s/files/1/0437/2480/0151/files/stout_halfling_5e.pdf
    • https://cdn.shopify.com/s/files/1/0431/8488/1827/files/porenaziwexezufid.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93236297381.pdf
    • https://cdn.shopify.com/s/files/1/0437/7519/7346/files/purivavuxojubi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3320/6682/files/is_there_an_arrow_emoji.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013b3b.bin
dc6f2cb9d8700d34a2ad22bbacee4922a0a5001e0c1693cb46fdb5b817b70177
pdf-font-stream PDF embedded font (sfnt) at offset 0x13B3B 5320 bytes
font_01_sfnt_off00014d5e.bin
2249b43d6bb568f114deea021fca3864fa356911f84f245c0a451a1b297bc53e
pdf-font-stream PDF embedded font (sfnt) at offset 0x14D5E 10624 bytes