Malicious PDF — malware analysis report

Static analysis result for SHA-256 b987b6cabcf59312…

MALICIOUS

PDF

38.8 KB Created: 2020-08-30 09:53:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0cd9b5351486e43398890641550d3887 SHA-1: 3cdbe26d8b483a85f08ca22b24261ea8b085eaf4 SHA-256: b987b6cabcf59312aaf8f650126c2d920ff485b5f6e594644d82ffb06e910829
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm designed to lure users into downloading content, disguised as a movie download. The primary link, https://ttraff.com/wix?keyword=descargar+peter+pan+la+gran+aventura+espa%25C3%25B1ol+latino+mega, is identified as a malicious redirector. The document body and numerous embedded URLs further support the SEO link farm tactic, aiming to drive traffic to potentially malicious sites.

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/wix?keyword=descargar+peter+pan+la+gran+aventura+espa%25C3%25B1ol+latino+mega
    • https://cdn.shopify.com/s/files/1/0433/8571/6886/files/xuximavesa.pdf
    • https://cdn.shopify.com/s/files/1/0432/6211/6008/files/jareduje.pdf
    • https://cdn.shopify.com/s/files/1/0436/3531/0752/files/empty_pages_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0432/5598/8387/files/66492667663.pdf
    • https://static.usrfiles.com/ugd/b8c837_fd78d30831c44b54afee094af1d5ca48.pdf
    • https://cdn.shopify.com/s/files/1/0434/2317/0710/files/school_bus_driver_3d.pdf
    • https://cdn.shopify.com/s/files/1/0430/6855/5415/files/gunuruwe.pdf
    • https://cdn.shopify.com/s/files/1/0429/4092/4063/files/einstein_mass_energy_equation_derivation.pdf
    • https://cdn.shopify.com/s/files/1/0430/3329/7058/files/farming_with_native_beneficial_insects.pdf
    • https://cdn.shopify.com/s/files/1/0428/2174/6847/files/vewebipamofovewatumi.pdf
    • https://static.usrfiles.com/ugd/24853a_772500115422486a901e363c4fd5c3a3.pdf
    • https://static.usrfiles.com/ugd/b8c837_51e18f378204404bb747b8fc34048345.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005463.bin
99990173913bd8bec4429d5c7cd06d5e2c5bdd4fea978562323f3c92a1b9524f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5463 5524 bytes
font_01_sfnt_off000066e3.bin
7376580a849fce7d9b2474a5cc967ea9b34f6f44a1547bdb194c08adbe8549b0
pdf-font-stream PDF embedded font (sfnt) at offset 0x66E3 11300 bytes