Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a38988efe545637…

MALICIOUS

PDF

42.9 KB Created: 2020-08-31 15:55:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ec6f640dab0d113ebafab471855e877e SHA-1: d8618c3620c1eacaf84964f74177e6c59e01cf10 SHA-256: 3a38988efe545637fca47c5d09fc91085d815e36e23f47ff45d06c6b64bb9564
154 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=battery+charge+video'. This URL is presented within the document body, suggesting a social engineering lure. The presence of a large number of external PDF links, many pointing to Shopify domains, indicates a link farm, likely for SEO manipulation or to obscure the malicious redirector. The ML classifier also strongly flagged this PDF as malicious.

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=battery+charge+video
    • https://static.usrfiles.com/ugd/12f4eb_e295bca885e24d8bb7d10a83205cbeba.pdf
    • https://static.usrfiles.com/ugd/2e4eb4_767805ba3f784b41be6a111bfb749314.pdf
    • https://static.usrfiles.com/ugd/eb6612_6201764103804529811adca1774b97d6.pdf
    • https://static.usrfiles.com/ugd/b8c837_a5d7dc1cfffc4c32bd88f0a002258f45.pdf
    • https://cdn.shopify.com/s/files/1/0464/2819/2920/files/eso_deshaan_map.pdf
    • https://cdn.shopify.com/s/files/1/0428/7266/8319/files/42293492399.pdf
    • https://cdn.shopify.com/s/files/1/0432/7194/6398/files/29963919728.pdf
    • https://cdn.shopify.com/s/files/1/0467/9945/4359/files/nudipofujir.pdf
    • https://cdn.shopify.com/s/files/1/0434/7245/3784/files/saunders_nclex_rn_5th_edition_cd_dow.pdf
    • https://cdn.shopify.com/s/files/1/0433/1316/8542/files/94355782853.pdf
    • https://cdn.shopify.com/s/files/1/0431/0397/7634/files/19166325570.pdf
    • https://cdn.shopify.com/s/files/1/0432/2564/5211/files/28965159546.pdf
    • https://cdn.shopify.com/s/files/1/0434/4872/9766/files/berlingo_2020_manual.pdf
    • https://cdn.shopify.com/s/files/1/0463/2202/4610/files/sociology_book_in_bengali.pdf
    • https://static.usrfiles.com/ugd/b8c837_fd0ce4da3a354f04baf23d742bfe07a9.pdf
    • https://static.usrfiles.com/ugd/6f58fb_4edfc4fa9bcf413094ba195419498001.pdf
    • https://static.usrfiles.com/ugd/3f80ec_c7828c08723f471baf470ca49be60b91.pdf
    • https://static.usrfiles.com/ugd/136d07_996f4282d2d44883a5e8a03e0a44fd24.pdf
    • https://static.usrfiles.com/ugd/b444d4_8763bb7271d04c028dc789742745b839.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_off00006bdf.bin
d80d6f6bd2e2d6e6c96c34023e2342c60fce1b9e28999684c8eb0b99cb5cc0d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BDF 5204 bytes
font_01_sfnt_off00007d9b.bin
2516e243924825d92d18edf2c4223bbb9f10123684f7452509324d1e8aec0007		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D9B 9564 bytes

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