Malicious PDF — malware analysis report

Static analysis result for SHA-256 904c2316948f05c4…

MALICIOUS

PDF

54.9 KB Created: 2020-08-29 10:40:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2567168cc2323601b2e82ecdcedfbc09 SHA-1: c081ebf86439ee741312c3b93886ad7ce8c5b382 SHA-256: 904c2316948f05c44279b6d3e59dd100b3de0fa018954df6a47c187488db6f22
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.com/wix?keyword=imvu+indir+gezginler`. This URL is embedded within the document body, disguised as a download link. The document also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on `cdn.shopify.com`. The ML classifier strongly indicates maliciousness.

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=imvu+indir+gezginler
    • https://static.usrfiles.com/ugd/b8c837_d6b7d4e6566648ff8d62b88f85dfd127.pdf
    • https://static.usrfiles.com/ugd/b8c837_778eadfd0cd3492fad1978ab6ba96529.pdf
    • https://static.usrfiles.com/ugd/b8c837_09334912cfe84fe58a2eb31cacd0fefb.pdf
    • https://static.usrfiles.com/ugd/b8c837_039eb785c3ad49aeba5a0d4b715387a2.pdf
    • https://static.usrfiles.com/ugd/b8c837_549eebdb6cbf4c96a468488f6594c729.pdf
    • https://cdn.shopify.com/s/files/1/0432/6539/2803/files/69602619287.pdf
    • https://cdn.shopify.com/s/files/1/0431/2167/2356/files/equivalent_ratio_tables_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/5312/9640/files/drive_movie_download_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0432/1384/8731/files/acca_financial_reporting_past_questions.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/3785448733.pdf
    • https://cdn.shopify.com/s/files/1/0434/0488/6166/files/vemifi.pdf
    • https://cdn.shopify.com/s/files/1/0435/8481/5259/files/pdf_english_grammar_tenses_exercises_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0445/7873/4239/files/mesukomutowotupitatimod.pdf
    • https://cdn.shopify.com/s/files/1/0429/1087/5815/files/44509806793.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mowojemabedeju.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000895a.bin
38f93d0492351e5e7fd04347e99af2abb74d0f073c61e874719a3a8c33422f5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x895A 4496 bytes
font_01_sfnt_off0000986f.bin
9adda27c6352163dc0fe67e138d310790b38bd2fc04075fd9d0a8726a986a1a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x986F 12476 bytes
font_02_sfnt_off0000beff.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBEFF 4324 bytes

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