Malicious PDF — malware analysis report

Static analysis result for SHA-256 59b570b8b57d2bad…

MALICIOUS

PDF

40.8 KB Created: 2020-08-01 23:26:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb2343046556c0230b81601056f469ee SHA-1: b17a84a453e9055aa828f997e360166b2f7557d4 SHA-256: 59b570b8b57d2badf237aae0658a273e7fdc3b6bae7f203f68cc3a85b8e7cbea
152 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as a legitimate download, but the primary link redirects to a known malicious infrastructure. The document body, though heavily obfuscated, contains text related to 'the respect principle pdf free download' and the malicious redirector URL. This indicates a social engineering attempt to trick users into visiting a malicious site.

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.ru/pify?keyword=the+respect+principle+pdf+free+download
    • http://files.hannelorajohansson.com/uploads/1/3/0/7/130775734/4b60ca98aa785c6.pdf
    • http://files.downtownbaptist.com/uploads/1/3/2/7/132740905/1758950.pdf
    • http://files.kccdcca.com/uploads/1/3/1/4/131453325/ketewaxagena_fezugelit_lebuziwumapux_rutuvo.pdf
    • https://cdn.shopify.com/s/files/1/0430/1747/0101/files/jogiluzinituzi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37394074323.pdf
    • https://cdn.shopify.com/s/files/1/0430/2998/7489/files/53342236005.pdf
    • https://cdn.shopify.com/s/files/1/0432/3350/9534/files/dadokurevulelinonefefubax.pdf
    • https://cdn.shopify.com/s/files/1/0436/5297/2697/files/52372226221.pdf
    • https://cdn.shopify.com/s/files/1/0434/2277/7496/files/79905444289.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lunizededalusabunis.pdf
    • https://cdn.shopify.com/s/files/1/0433/4583/8232/files/jepuboxafukedegoj.pdf
    • https://cdn.shopify.com/s/files/1/0430/9814/4932/files/dokaxujuxaj.pdf
    • https://cdn.shopify.com/s/files/1/0437/9289/2053/files/lefuxabuxifalozibagegisu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/xiwesofafoteweluxofivewi.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_off0000649e.bin
4dc5cf1c111ebf86dc66eb95bc6b7fc6e5867599122345545082699acba499c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x649E 5284 bytes
font_01_sfnt_off000076a0.bin
b6958e33a9e8cfd486433b27fae0431f57ec22ae00a167396c7ca6c078ed05fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76A0 9520 bytes

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