Malicious PDF — malware analysis report

Static analysis result for SHA-256 60bc59f5eb7fa351…

MALICIOUS

PDF

51.3 KB Created: 2020-08-29 22:56:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: df8b4f0cad30524473c57925eaeb184f SHA-1: 3abe17d6aaeee0b38e6259957732fb68110a6645 SHA-256: 60bc59f5eb7fa3515a6a019b52234b0b435cf5f024fb76b8a68d11f554e2e472
154 Risk Score

Malware Insights

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

This PDF document contains a malicious redirector link disguised as a free book download, aiming to lure users to a malicious site. The document also hosts a large number of external PDF links, likely for SEO manipulation or to obscure the malicious redirector. No scripts were extracted, but the presence of a malicious redirector and the ML classifier's high confidence indicate a high likelihood of malicious intent.

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.ru/wix?keyword=50+shades+of+grey+4th+book+free+download
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/7773/0464/files/34768558951.pdf
    • https://cdn.shopify.com/s/files/1/0432/8679/0304/files/92267010684.pdf
    • https://cdn.shopify.com/s/files/1/0437/0097/7829/files/.pdf
    • https://cdn.shopify.com/s/files/1/0462/5619/3687/files/ice_fishing_gear.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8861538602.pdf
    • https://static.usrfiles.com/ugd/b8c837_b5cfaea357d74801a4863968279feb0a.pdf
    • https://static.usrfiles.com/ugd/b8c837_4c28141f139f4963a7afeef6ed5cd7e6.pdf
    • https://static.usrfiles.com/ugd/96768c_566040830f8c4280a0b5b3c9ab6ca696.pdf
    • https://static.usrfiles.com/ugd/e3c460_2bd4f44e49cc4502a0d9a502b2feabab.pdf
    • https://static.usrfiles.com/ugd/b8c837_89027fff57e94213849352ac165389d1.pdf
    • https://cdn.shopify.com/s/files/1/0432/0431/3247/files/maplestory_link_skill.pdf
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/85444104094.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gamusuzojikifikukudubug.pdf
    • https://cdn.shopify.com/s/files/1/0428/0470/7491/files/revo_uninstaller_pro_3._2._1.pdf
    • https://cdn.shopify.com/s/files/1/0434/8346/3832/files/wixajawoti.pdf
    • https://static.usrfiles.com/ugd/b8c837_f60e6bf37bba49bab33a35556f3a8162.pdf
    • https://static.usrfiles.com/ugd/daca0d_bf95d95f63644741b9f3974d7ce11c44.pdf
    • https://static.usrfiles.com/ugd/a48928_551446764049441f9bac3fa95cfff32e.pdf
    • https://static.usrfiles.com/ugd/5de1df_64de85a95a7f422988c491ba5b35f721.pdf
    • https://static.usrfiles.com/ugd/b8c837_fb3e26e588d44a439b6545c18e965d58.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_off000087a3.bin
283c131ac1284ef6c25f69290397f18568071f5470aaa08218d17d082282e6f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87A3 5828 bytes
font_01_sfnt_off00009b8d.bin
ac11f521fcfb5c2a1bb761a7e812b8ceeef56cef73056c0a9a04fdff6fe0263a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B8D 10572 bytes

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