Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1482f3f4ade0bf2…

MALICIOUS

PDF

47.8 KB Created: 2020-08-12 03:21:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a2165eea9cb6cf90d2de5aab8cc5119 SHA-1: eb5d2a4e87b87053ac2c2b0289d015ed912abdcd SHA-256: d1482f3f4ade0bf203710ce57d19e81f63e3a8792c092b474da3a15775f1f7e7
152 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the critical heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The document body, though partially corrupted, suggests a lure related to a 'causes of the civil war graphic organizer pdf'. The primary malicious IOC is the redirector URL https://ttraff.ru/pify?keyword=causes+of+the+civil+war+graphic+organizer+pdf, which is likely used to deliver a secondary payload.

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=causes+of+the+civil+war+graphic+organizer+pdf
    • http://files.theamericansixties.com/uploads/1/3/1/6/131637362/lodewexobabigukabi.pdf
    • http://files.glacierbaysportfishing.com/uploads/1/3/1/8/131872055/vanavodifi-vasavefoxabofob.pdf
    • http://files.hubbymoments.com/uploads/1/3/2/6/132681891/kipuwore.pdf
    • http://files.crossroadsbrooklyn.com/uploads/1/3/0/7/130775471/5795947.pdf
    • https://cdn.shopify.com/s/files/1/0429/2352/4259/files/sbi_bank_po_preparation_books.pdf
    • https://cdn.shopify.com/s/files/1/0434/7727/0678/files/panasonic_conduit_catalog.pdf
    • https://cdn.shopify.com/s/files/1/0431/2177/0656/files/xapikaxenafikit.pdf
    • https://cdn.shopify.com/s/files/1/0440/9170/3448/files/bbc_learning_english_news.pdf
    • https://cdn.shopify.com/s/files/1/0448/5795/0370/files/lista_de_bacterias_gram_negativas.pdf
    • https://cdn.shopify.com/s/files/1/0432/3993/2064/files/8559439348.pdf
    • https://cdn.shopify.com/s/files/1/0435/2658/6520/files/58494478330.pdf
    • https://cdn.shopify.com/s/files/1/0433/5576/6942/files/zuxavekom.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46496449222.pdf
    • https://cdn.shopify.com/s/files/1/0433/7205/2643/files/comment_installer_les_cameras_de_surveillance.pdf
    • https://cdn.shopify.com/s/files/1/0434/4902/4669/files/mefavirolilepukuvof.pdf
    • https://cdn.shopify.com/s/files/1/0428/3187/2166/files/discord_gray_color.pdf
    • https://cdn.shopify.com/s/files/1/0431/1551/1968/files/pazajiludoxi.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/
    • https://cdn.shopify.com/s/files/1/0440/9170/3448/files/bbc_learning_en

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ddc.bin
521d534bad1a393b94b9913b909e094f3c1b70f08d38826413582e2254fe0673		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DDC 5524 bytes
font_01_sfnt_off000080bc.bin
6fd12aa92ecee1865ccf5bf17fe70e0a8ac39ada7b59c299b2c738a1e56e6955		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80BC 10144 bytes
font_02_sfnt_off0000a378.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA378 4324 bytes

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