Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b269a5d1b8f62e3…

MALICIOUS

PDF

46.3 KB Created: 2020-08-23 22:45:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ddddff200461764a8e056edb1ac2d739 SHA-1: f7bc5656c011dff271699fbd42bd524f8f2776fa SHA-256: 0b269a5d1b8f62e332b9ba94d696bb9bfa2bd4499e92020d41d69bfd4218d9c6
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link that redirects to a malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the target URL, suggesting a phishing or scam attempt. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, likely for SEO manipulation or to distribute malicious content.

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/pify?keyword=honeywell+temperature+controller+manual+pdf
    • http://files.kencarder.com/uploads/1/3/2/7/132712115/kurolukefilewose.pdf
    • http://files.swampscottfootball.com/uploads/1/3/1/4/131455463/fetabafa.pdf
    • http://files.shearserenitysalon.com/uploads/1/3/1/3/131383553/53b9878d6b0f11.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/7209/4362/files/finedubosodomajifukuse.pdf
    • https://cdn.shopify.com/s/files/1/0448/9995/8939/files/vb._net_string_encoding.pdf
    • https://cdn.shopify.com/s/files/1/0431/1446/3394/files/31039258282.pdf
    • https://cdn.shopify.com/s/files/1/0449/3164/5608/files/jizen.pdf
    • https://cdn.shopify.com/s/files/1/0436/1060/3677/files/8740305902.pdf
    • https://cdn.shopify.com/s/files/1/0430/8706/9348/files/vupexukuvikubax.pdf
    • https://cdn.shopify.com/s/files/1/0433/8306/2678/files/jufukobix.pdf
    • https://cdn.shopify.com/s/files/1/0427/4877/2519/files/50822024139.pdf
    • https://cdn.shopify.com/s/files/1/0428/2299/2028/files/pewesapeludupugi.pdf
    • https://cdn.shopify.com/s/files/1/0430/3280/5527/files/49412402379.pdf
    • https://cdn.shopify.com/s/files/1/0429/9119/0167/files/datacion_con_carbono_14.pdf
    • https://cdn.shopify.com/s/files/1/0428/5631/7091/files/gadozixuniperefinuda.pdf
    • https://cdn.shopify.com/s/files/1/0437/7251/0362/files/31012534680.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006993.bin
573a96d9b7296b0c3803b3aa155971f3dbacae173568c9339f6a61a313bb4eb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6993 5112 bytes
font_01_sfnt_off00007af0.bin
b0ae6b13a952f62d373815b5ba6fb0f2c0b766ab2f7192bbf416d58da210a336		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF0 10096 bytes
font_02_sfnt_off00009d8c.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D8C 4324 bytes

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