Malicious PDF — malware analysis report

Static analysis result for SHA-256 63f4260de0a69c96…

MALICIOUS

PDF

45.9 KB Created: 2020-09-09 01:47:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a6713dadb0b60d1b80cf86110959398 SHA-1: 9f414fe3bd3ff7a339053bef48577c428d496119 SHA-256: 63f4260de0a69c969e063956b35c80b1cff163482f7072f23fcf5fbd194af29a
162 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/pify?keyword=treating+shingles+guidelines'. The document body, though heavily obfuscated, also contains this URL and numerous other links to PDF files hosted on static.usrfiles.com, suggesting a link farm or content-luring strategy. The ML classifier also flagged this PDF as malicious with high confidence.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/pify?keyword=treating+shingles+guidelines
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_b4a0729e245046edae04b76f9e289909.pdf
    • https://static.usrfiles.com/ugd/89363e_79b88f1cba7640a6aaea6e7dc18c36fd.pdf
    • https://static.usrfiles.com/ugd/cd1d52_af950def273b477199cda85466b7b1d9.pdf
    • https://static.usrfiles.com/ugd/ab63e3_f5ad0bd6fb5f4bb4930699ead38b9237.pdf
    • https://static.usrfiles.com/ugd/756799_f1e1bfc2f5204d4aa33d530f058159f8.pdf
    • https://static.usrfiles.com/ugd/6a44d8_f5f8843f48724711ad24b050ca794749.pdf
    • https://static.usrfiles.com/ugd/badafb_299919d8277e4ef3af83b218a4812571.pdf
    • https://static.usrfiles.com/ugd/97368a_0858d4a902c641999f7c8aea775c3e8f.pdf
    • https://static.usrfiles.com/ugd/10cedf_f9a3e1ace77d4231bab5871337e59b0c.pdf
    • https://static.usrfiles.com/ugd/529dbf_cf143daa94854bb989cd5d08b8bc9744.pdf
    • https://cdn.shopify.com/s/files/1/0434/7461/6473/files/naxojomaduzewivegim.pdf
    • https://cdn.shopify.com/s/files/1/0432/5769/2315/files/25999959104.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tagitigupi.pdf
    • https://cdn.shopify.com/s/files/1/0435/6636/6869/files/ags_pre_algebra.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_off0000769b.bin
89509c2021bff847d048aba7c7d9ece4e8d20e05543ca2b5f2c11fc7b7f0e5b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x769B 5036 bytes
font_01_sfnt_off000087ae.bin
6a52b8245eb67b4ae6896c1e4e041dfdc561f527d44775e410028896a0c5c042		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87AE 10376 bytes

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