Malicious PDF — malware analysis report

Static analysis result for SHA-256 35cec1eb5d03b05e…

MALICIOUS

PDF

40.9 KB Created: 2020-08-02 13:47:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b163bb155b8da9950f20355ef11aaacc SHA-1: 648ab58f6649f800d5fe0c191843c7fccf608a60 SHA-256: 35cec1eb5d03b05e5449c13d88394e43bc4f06ae38a77d497a9100bb887846e2
150 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text referencing 'Webbie savage life 3 download' and the malicious URL itself. The PDF_SEO_LINK_FARM heuristic indicates a large number of embedded links, suggesting a link farm or distribution mechanism. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=webbie+savage+life+3+download
    • http://files.sophieandmi.com/uploads/1/3/0/8/130813132/tumowuxuvuserufuz.pdf
    • http://files.100womenwhocareannapolis.com/uploads/1/3/1/3/131378899/71a8e572616551a.pdf
    • http://files.writingonreels.uk/uploads/1/3/1/3/131378921/dabawomunetu.pdf
    • http://files.chicagolandluxerentals.com/uploads/1/3/1/3/131383318/7857166.pdf
    • https://cdn.shopify.com/s/files/1/0437/0841/6165/files/45303257473.pdf
    • https://cdn.shopify.com/s/files/1/0428/3544/3871/files/58928530014.pdf
    • https://cdn.shopify.com/s/files/1/0427/7967/2735/files/55342686178.pdf
    • https://cdn.shopify.com/s/files/1/0434/2897/0652/files/79484995570.pdf
    • https://cdn.shopify.com/s/files/1/0437/9744/6816/files/98460888834.pdf
    • https://cdn.shopify.com/s/files/1/0430/8389/0850/files/pizugisafid.pdf
    • https://cdn.shopify.com/s/files/1/0436/4691/0617/files/jogiditodoxa.pdf
    • https://cdn.shopify.com/s/files/1/0430/2805/4169/files/22797625783.pdf
    • https://cdn.shopify.com/s/files/1/0431/5542/3383/files/32613431018.pdf
    • https://cdn.shopify.com/s/files/1/0432/8072/8224/files/ropejozuxokab.pdf
    • https://cdn.shopify.com/s/files/1/0430/0197/0837/files/bakinasepiximujem.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061cb.bin
8d9943968a678678ff28f5fe8a62b5ef868138a95af6ce4ac433a1acf95481d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61CB 5448 bytes
font_01_sfnt_off00007488.bin
8909b646e67f13c2a1f60963898b571999ad647bed441ec2e46c969916916b7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7488 9960 bytes

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