Malicious PDF — malware analysis report

Static analysis result for SHA-256 f180f6dd6db72c2d…

MALICIOUS

PDF

61.1 KB Created: 2020-08-12 14:02:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d0cbb8c4845f43ac93c8d5e7271629df SHA-1: 50d798c911054c0916a578d14dbc8b672babf4bd SHA-256: f180f6dd6db72c2df34c79d6c81beea741607ad09c113306410f0cbf3eb6a349
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector hosted on 'ttraff.cc'. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting an attempt to manipulate search engine results or distribute malicious content through a link farm. The ML classifier strongly supports the malicious nature of this PDF.

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.cc/pify?keyword=blue+bottle+experiment+pdf
    • http://files.bullbearkidsbooks.com/uploads/1/3/2/6/132681404/medewesiposade.pdf
    • http://files.lubbockministry.org/uploads/1/3/0/8/130813887/gixapir_tisitejadakutev_ninekumej.pdf
    • http://sumimir.iseeyouministry.com/uploads/1/3/0/7/130775732/wejojuruvipuju-jexedafanuzina-zenexenurubozul-kovinotekebi.pdf
    • http://bezaviras.kaimukiymca.org/uploads/1/3/2/8/132816202/8f942ad00.pdf
    • http://files.mcadoos.ca/uploads/1/3/1/8/131857419/08917f6b.pdf
    • https://cdn.shopify.com/s/files/1/0432/4284/8418/files/3341542281.pdf
    • https://cdn.shopify.com/s/files/1/0428/9419/6902/files/sonupupefodigalubo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73633131036.pdf
    • https://cdn.shopify.com/s/files/1/0437/6428/5601/files/37787224676.pdf
    • https://cdn.shopify.com/s/files/1/0429/6785/9359/files/exercises_present_simple_beginners_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0430/2487/5674/files/galetarupa.pdf
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/xoxikatalejetuvimedewe.pdf
    • https://cdn.shopify.com/s/files/1/0433/8014/6339/files/61915376345.pdf
    • https://cdn.shopify.com/s/files/1/0431/8789/6480/files/29655838181.pdf
    • https://cdn.shopify.com/s/files/1/0438/5724/8421/files/furawa.pdf
    • https://cdn.shopify.com/s/files/1/0430/2422/0321/files/25905241812.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_off00009c04.bin
0097606aaf18e4c8084a2c21c4823d660eb99860054cb02be39d67f6f5eeed19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C04 5056 bytes
font_01_sfnt_off0000ad24.bin
ade6f2e2e5f30fea08d81c6bf1303b9ea657acc272a66c20036cf8e7446df860		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD24 10668 bytes
font_02_sfnt_off0000d1af.bin
107dd7461bad0ee7f69ec232d7edbfa51533cbe03462e0930b0bd999c9024e27		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD1AF 16152 bytes

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