Malicious PDF — malware analysis report

Static analysis result for SHA-256 eadf90377d005a7c…

MALICIOUS

PDF

67.8 KB Created: 2020-08-09 17:00:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 764f526fe86e61cbdd68e8567e4a6883 SHA-1: af73247339ae5554aca606bd93d5f17c9816189a SHA-256: eadf90377d005a7c87fb00bba70dd3dd15133741cf8e6ba7950020757a480652
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, identified as a link farm, designed to redirect users to malicious content. One prominent link, 'https://ttraff.com/pify?keyword=array+in+java+notes+pdf', is flagged as malicious. The document body, though heavily obfuscated, contains this same URL, suggesting a social engineering lure to trick users into clicking the link. The presence of a link farm and a malicious redirector indicates a phishing or malware distribution attempt.

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.com/pify?keyword=array+in+java+notes+pdf
    • http://files.bathbombbootcamp.com/uploads/1/3/1/8/131860125/1c16f2f4f1.pdf
    • http://files.onesquareworld.org/uploads/1/3/1/3/131379615/sekadem.pdf
    • http://risotim.spartanburgscottishrite.com/uploads/1/3/0/9/130969754/58809ac.pdf
    • http://files.saravongillern.com/uploads/1/3/2/3/132302824/7244669.pdf
    • https://cdn.shopify.com/s/files/1/0433/6330/3575/files/jusonixe.pdf
    • https://cdn.shopify.com/s/files/1/0430/6678/5949/files/zafekabo.pdf
    • https://cdn.shopify.com/s/files/1/0429/2411/4076/files/witopokovamafi.pdf
    • https://cdn.shopify.com/s/files/1/0432/6332/8411/files/8819533528.pdf
    • https://cdn.shopify.com/s/files/1/0436/0352/5790/files/15802456072.pdf
    • https://cdn.shopify.com/s/files/1/0430/9316/4181/files/wutusinor.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kupesuditijativerawepafu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7618/1400/files/death_of_ivan_ilyich_sparknotes.pdf
    • https://cdn.shopify.com/s/files/1/0433/8044/1238/files/xojewomuk.pdf
    • https://cdn.shopify.com/s/files/1/0436/5837/9417/files/78028450962.pdf
    • https://cdn.shopify.com/s/files/1/0432/5844/5979/files/xalar.pdf
    • https://cdn.shopify.com/s/files/1/0434/0911/3253/files/probiotics_davis.pdf
    • https://cdn.shopify.com/s/files/1/0433/4397/0463/files/komekefijabawobebububotu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7578/8184/files/kaxemarekesinidinula.pdf
    • https://cdn.shopify.com/s/files/1/0433/7729/5521/files/jifiv.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_off0000c3ff.bin
f5758f632f6db1797067303fc3ae8b4a36ffa3e169c209b123d92849437afea7
pdf-font-stream PDF embedded font (sfnt) at offset 0xC3FF 5228 bytes
font_01_sfnt_off0000d5ef.bin
dd9db320fdaa00c42dadd5a3427e45ca9d8ad9938d387bb5240afeaa1d6bd229
pdf-font-stream PDF embedded font (sfnt) at offset 0xD5EF 13912 bytes