Malicious PDF — malware analysis report

Static analysis result for SHA-256 47832e00b8f973ef…

MALICIOUS

PDF

47.5 KB Created: 2020-08-21 12:00:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 320cc3d1cbe72f4b9a523d3b4eef7e1a SHA-1: 3dc1dd0cca123e7dee533c0472cde59fed947e13 SHA-256: 47832e00b8f973ef8661e48517baaa94a4d2d06aff7ac705cebb7a81a1034dd2
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=animaciones+en+power+point+pdf'. This URL is presented within the document body, suggesting a lure to trick users into clicking it. The presence of numerous other links, many hosted on Shopify, indicates a potential link farm for SEO manipulation or distributing further malicious content. 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.ru/pify?keyword=animaciones+en+power+point+pdf
    • http://files.cinnamonsbotanicals.com/uploads/1/3/0/8/130874582/gokasusibatab.pdf
    • http://files.dpbpa.org/uploads/1/3/1/4/131453067/burefuri.pdf
    • https://cdn.shopify.com/s/files/1/0434/1897/6414/files/b._sc_mathematics_books.pdf
    • https://cdn.shopify.com/s/files/1/0430/8310/4409/files/selidimur.pdf
    • https://cdn.shopify.com/s/files/1/0436/4143/8366/files/filogenetico_y_ontogenetico.pdf
    • https://cdn.shopify.com/s/files/1/0431/2806/2109/files/vegerubujojazivebire.pdf
    • https://cdn.shopify.com/s/files/1/0447/9421/6599/files/borland_delphi_7._0_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/jivisaxibuzuvigepewese.pdf
    • https://cdn.shopify.com/s/files/1/0432/0896/6301/files/26791133974.pdf
    • https://cdn.shopify.com/s/files/1/0430/2408/9242/files/98872230336.pdf
    • https://cdn.shopify.com/s/files/1/0434/4083/2678/files/dirixexopi.pdf
    • https://cdn.shopify.com/s/files/1/0439/9448/0798/files/53753502485.pdf
    • https://cdn.shopify.com/s/files/1/0430/5816/7959/files/tubisasabigasa.pdf
    • https://cdn.shopify.com/s/files/1/0439/5070/2750/files/adb_frp_bypass_for_pc.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066c0.bin
65e0e2410ab4d3f7409f23b2fe06d79f80207998a4dbf3e8559415c3741896a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66C0 5136 bytes
font_01_sfnt_off00007816.bin
e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7816 1800 bytes
font_02_sfnt_off000080a4.bin
0cdc03f1b5a5089977509c72e22debfaaa825b1c503de77b7d7b44c53843b09f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80A4 10024 bytes
font_03_sfnt_off0000a2e6.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2E6 4324 bytes

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