Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c06345752d1aaef…

MALICIOUS

PDF

47.4 KB Created: 2020-08-02 19:09:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2d31edd7b0324e8d725de321539e663b SHA-1: 3a391e5b0bfb58405bdf041e19c85a25c9298466 SHA-256: 9c06345752d1aaef72b596f1e04c0b8bc7465dde9d8a9f805a81af1a1697515d
152 Risk Score

Malware Insights

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

The PDF document contains a link to a known malicious redirector, ttraff.com, which is disguised as a guide on 'how to go incognito on mac'. The document also features a large number of external links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent.

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=how+to+go+incognito+on+mac
    • http://files.faulknerproducerservices.com/uploads/1/3/1/3/131381204/0146fe611d1.pdf
    • http://files.bromptoncourttownhomes.com/uploads/1/3/1/3/131398279/57b9d5ecd.pdf
    • http://files.greyhoundadoption.ca/uploads/1/3/0/7/130776386/aadf631cbd83243.pdf
    • http://files.invernesssouth.com/uploads/1/3/0/7/130776206/a99813e94636b6.pdf
    • http://files.goodforyourecords.com/uploads/1/3/1/3/131380612/zerures.pdf
    • https://cdn.shopify.com/s/files/1/0438/4607/4525/files/7817637468.pdf
    • https://cdn.shopify.com/s/files/1/0429/7372/4825/files/foxomegelekuladabiwudomux.pdf
    • https://cdn.shopify.com/s/files/1/0438/0708/0608/files/wii_u_common_key.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5081520916.pdf
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/80682342707.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78491346320.pdf
    • https://cdn.shopify.com/s/files/1/0438/4797/5062/files/sedelupiranozupizabes.pdf
    • https://cdn.shopify.com/s/files/1/0437/1359/3499/files/monoprice_maker_select.pdf
    • https://cdn.shopify.com/s/files/1/0430/3680/3233/files/92030461359.pdf
    • https://cdn.shopify.com/s/files/1/0438/2926/4546/files/46865542600.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tefabojukiva.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_off000067f8.bin
b93ecee89df46274edcb9f164b7fb6193767faf689a35c239c771f0f1a181a20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67F8 4864 bytes
font_01_sfnt_off0000788c.bin
f1af38ec87fad23c56d449649e3d72ee329dac0bd8257d27268ab333f2ffdba5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x788C 9908 bytes
font_02_sfnt_off00009aab.bin
c21779a29534ea9bdc989adc473b0c1d590368344a7d04d79576b538ab837276		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AAB 16436 bytes

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