Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdad7393f5d88df2…

MALICIOUS

PDF

41.6 KB Created: 2020-08-31 08:43:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d17348f52d3a85556b668d83f357a8cd SHA-1: 972b9fde3d92e5b83a34f4a6c8f2eeb555cf17f0 SHA-256: fdad7393f5d88df2d1c0364c15b6e5fb15f701631bbbadaebac1851cf79f8337
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to host or chain to further malicious content. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The presence of numerous other links to static.usrfiles.com indicates a link farm strategy, likely for SEO poisoning or to obscure the final 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.cc/wix?keyword=cartas+de+despedida+de+amor
    • https://static.usrfiles.com/ugd/d94ae5_80409f1761f840beac95229d4e55c5ea.pdf
    • https://static.usrfiles.com/ugd/1ee69b_f8111ac242a146e38e3ee0cf5c930e77.pdf
    • https://static.usrfiles.com/ugd/b8c837_a2069fcc385d483c8417b5d2b6ac7d3a.pdf
    • https://static.usrfiles.com/ugd/8b2c09_b7464444a64343d38ec3ce73656dd8d5.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/64630415929.pdf
    • https://static.usrfiles.com/ugd/c8a981_78d5f2ae868a4fe6b43c3b55614162ff.pdf
    • https://static.usrfiles.com/ugd/b65acf_3df8c159fff04f13be74148f6221a612.pdf
    • https://static.usrfiles.com/ugd/fb5067_0d31289409ce4ab1a9896124c53813b9.pdf
    • https://static.usrfiles.com/ugd/b8c837_bd304fa80b284c0da156ffa63fbaaa78.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/
    • https://static.usrfiles.com/ugd/b8c837_a2069fcc385d

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006616.bin
015a2b2d6574a82f9d48b28793331ffde35a75c64866d0326fd76b3137154434		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6616 4976 bytes
font_01_sfnt_off000076e5.bin
718762b2a8a0a2d0a6ffdf16c7345a0872b93ed5559830ef256fd3702c5857a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76E5 10324 bytes

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