Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0eb5f6d85465350…

MALICIOUS

PDF

46.2 KB Created: 2020-08-30 03:59:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 21b5383971e9a802b583dab302720964 SHA-1: 2bbe9737f2ba81d871a843f5fb5f9e73998c1d2e SHA-256: f0eb5f6d85465350d1d33d7d3cf6a6e3014459de2559755f0377fec98f052615
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, specifically pointing to 'https://ttraff.me/wix?keyword=pixel+3+drop+test'. The document body, though heavily obfuscated, contains this URL and references a 'Pixel 3 drop test', suggesting a lure to a malicious site. The presence of a large number of external PDF links also indicates a link farm, a common tactic for SEO poisoning or distributing malicious content. No scripts were extracted from this sample.

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.me/wix?keyword=pixel+3+drop+test
    • https://static.usrfiles.com/ugd/b8c837_3ed2aaded1c3425d813f5387c4679206.pdf
    • https://static.usrfiles.com/ugd/599f1c_34716540914e4d7ca56f14e843859adf.pdf
    • https://static.usrfiles.com/ugd/10e3af_dd18b63ea6f04f15aeb2f6a62940feea.pdf
    • https://cdn.shopify.com/s/files/1/0431/1885/4306/files/digestion_of_carbohydrates.pdf
    • https://cdn.shopify.com/s/files/1/0434/1678/0956/files/pokemon_dark_flame_game_free_download_gba.pdf
    • https://cdn.shopify.com/s/files/1/0431/4457/7178/files/9277587738.pdf
    • https://cdn.shopify.com/s/files/1/0437/2699/5621/files/wezimituvasu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4778/8450/files/93521209862.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pewugokujugiwiburonanas.pdf
    • https://cdn.shopify.com/s/files/1/0440/9055/6568/files/tatokukixotinarojuvuvof.pdf
    • https://cdn.shopify.com/s/files/1/0437/1503/5288/files/77400324475.pdf
    • https://cdn.shopify.com/s/files/1/0434/0645/9029/files/lifo_fifo_balance_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/4018/6268/files/telugu_panchangam_2016-_2017.pdf
    • https://cdn.shopify.com/s/files/1/0428/8485/8022/files/angularjs_export.pdf
    • https://cdn.shopify.com/s/files/1/0439/0413/9416/files/97607633940.pdf
    • https://cdn.shopify.com/s/files/1/0434/3883/3816/files/1984_cessna_172p_poh.pdf
    • https://cdn.shopify.com/s/files/1/0439/2629/0587/files/30923351009.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_off00006a90.bin
90828347e75c213d1293169854bae4eb487af381b8704904bc78cf47fcfaafa3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A90 4660 bytes
font_01_sfnt_off00007a79.bin
9c63e14337e09f956f32c996506c97b9b5c8fd2417f8585af83823b953c533de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A79 10360 bytes
font_02_sfnt_off00009deb.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DEB 4324 bytes

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