Malicious PDF — malware analysis report

Static analysis result for SHA-256 16735ae8a10f7ff0…

MALICIOUS

PDF

58.2 KB Created: 2020-07-30 03:27:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5143613bd932c340a94e8ba04a34aa1d SHA-1: 695ba1ddace41f524c6753f92933122afb099d37 SHA-256: 16735ae8a10f7ff08953f35b799effb3f7e6e81b8e61b5ecaf807978ffd2571f
194 Risk Score

Malware Insights

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

This PDF document contains numerous links, including one pointing to a known malicious redirector, suggesting a link farm or phishing lure. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document may be intended to trick users into downloading and decrypting a password-protected archive, likely containing a malicious payload. No scripts were extracted, but the presence of embedded URLs and the link farm behavior strongly suggest a malicious intent to redirect users to harmful sites.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.cc/pify?keyword=resultados+de+un+sistema+de+calidad+total+pdf
    • http://files.gcclittleton.org/uploads/1/3/1/4/131453867/2240f6.pdf
    • http://files.hello-baby-toys.com/uploads/1/3/1/4/131453807/4352687.pdf
    • http://files.futfemuniversal.com/uploads/1/3/1/3/131398246/1427613.pdf
    • http://files.eastviewpets.com/uploads/1/3/1/3/131379312/195162.pdf
    • http://files.fancydollfacepersians.com/uploads/1/3/1/6/131606782/01f1cdde66db.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/2449/9367/files/bibowutedat.pdf
    • https://cdn.shopify.com/s/files/1/0435/3762/9348/files/ginizunutiba.pdf
    • https://cdn.shopify.com/s/files/1/0438/4574/6848/files/48442561628.pdf
    • https://cdn.shopify.com/s/files/1/0428/5281/0911/files/gerates.pdf
    • https://cdn.shopify.com/s/files/1/0433/5602/9093/files/8564365566.pdf
    • https://cdn.shopify.com/s/files/1/0432/3239/5426/files/52250119916.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/16078321250.pdf
    • https://cdn.shopify.com/s/files/1/0431/5850/3590/files/lepujuze.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mefopevepal.pdf
    • https://cdn.shopify.com/s/files/1/0433/1061/2644/files/bufosoluvisisalobiwo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/netepazabefi.pdf
    • https://cdn.shopify.com/s/files/1/0432/1289/8461/files/xofoxatudolipu.pdf
    • https://cdn.shopify.com/s/files/1/0430/7025/9357/files/wopuzigubutuwepugerulixi.pdf
    • https://cdn.shopify.com/s/files/1/0429/0379/7916/files/74014658794.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_off0000a5c0.bin
5a79b2dd03e2ee49de4ff54869ae5d6460e679617b8d005c5720463feb7d8d00		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA5C0 5092 bytes
font_01_sfnt_off0000b705.bin
74ec9569c955ba0994b914b5dbc86af4d414912e53a66aa494c6382a82066dc4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB705 10944 bytes

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