Malicious PDF — malware analysis report

Static analysis result for SHA-256 00e4288e959a908f…

MALICIOUS

PDF

41.3 KB Created: 2020-08-31 03:22:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f7e5d8008ec1453a060d8fe2d44fe0e9 SHA-1: 5c88ba2d8e1e3f9a78e8f7409990097b6d59badb SHA-256: 00e4288e959a908fd30a70e39812bd7b96d7de43f98372dc3d18b3e3a63b88dc
154 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to a known malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.com/wix?keyword=macarena+perde+o+bebe+vis+um+vis. The document's structure and content suggest a phishing or redirection attempt to a malicious site.

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=macarena+perde+o+bebe+vis+um+vis
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/6cfc61_406475a31ff140e3aa39a232d537b706.pdf
    • https://static.usrfiles.com/ugd/b8c837_a4ad87bbb5ac45b1b7a6d1efa8027d16.pdf
    • https://static.usrfiles.com/ugd/5360f8_a62babcab9974248a7ab8d705289917a.pdf
    • https://static.usrfiles.com/ugd/b8c837_e2aa5f7c293f40e8a49fb8af0b84d0d0.pdf
    • https://static.usrfiles.com/ugd/b8c837_607cf5f478734dbaa885c6cc1aadfda5.pdf
    • https://cdn.shopify.com/s/files/1/0432/2702/1480/files/days_of_the_week_lesson_plan.pdf
    • https://cdn.shopify.com/s/files/1/0437/3564/6357/files/biological_science_freeman_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/1710/8642/files/turkish_phonology_morphology_and_syntax.pdf
    • https://cdn.shopify.com/s/files/1/0431/1482/3844/files/format_factory_for_android_phone_free.pdf
    • https://static.usrfiles.com/ugd/bae363_1fadc20d69584db0aafa49ff702e1c5b.pdf
    • https://static.usrfiles.com/ugd/b8c837_88df5c8725814e8daedac952781e8b81.pdf
    • https://static.usrfiles.com/ugd/1decf9_d3d23461cc134b8b882a38d6cf913c78.pdf
    • https://static.usrfiles.com/ugd/b8c837_3bc19c4b22e94fb09da987312d9a7df4.pdf
    • https://static.usrfiles.com/ugd/b8c837_3b8570033c1c410996df5bb174229800.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_off000061f7.bin
b307f916afde57b76a87d95e8634a82fca3c343fe5d36f86dfc49993e7ef4551
pdf-font-stream PDF embedded font (sfnt) at offset 0x61F7 5392 bytes
font_01_sfnt_off00007434.bin
3ecf8ab22830d6261fe310048b11e650533117012fd281968ce3c639d5712a50
pdf-font-stream PDF embedded font (sfnt) at offset 0x7434 11800 bytes