Malicious PDF — malware analysis report

Static analysis result for SHA-256 f64358f950951cfb…

MALICIOUS

PDF

48.6 KB Created: 2020-08-07 21:54:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70591c719a11aae0df6afa18637d93bf SHA-1: 498aa6b72355ad698efa621daaa1588d181abf48 SHA-256: f64358f950951cfb8a6ed25ac0da9c4832d5ec2de9e1287021c6f68d0f9c91e4
128 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to 'free download' and the malicious URL itself. The primary attack pattern involves luring the user to click on a link that redirects to malicious infrastructure, likely for further payload delivery or phishing.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=bcs+book+pdf+free+download
    • http://files.uaphialphadelta.com/uploads/1/3/1/4/131437669/1874c5529.pdf
    • http://zozim.genecalculators.net/uploads/1/3/0/7/130775934/zovepajuputisapewo.pdf
    • http://biruzopim.racefkc.com/uploads/1/3/1/0/131070152/8285525.pdf
    • http://files.win19.org/uploads/1/3/0/8/130814296/7724866.pdf
    • http://files.uprisingstarsinc.org/uploads/1/3/0/8/130813992/jizodoz-paxuvi-nuworumokutor-dupezonov.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kepikopu.pdf
    • https://cdn.shopify.com/s/files/1/0436/8737/9097/files/jibiruwanarewize.pdf
    • https://cdn.shopify.com/s/files/1/0432/2571/0750/files/kemonavofapar.pdf
    • https://cdn.shopify.com/s/files/1/0436/2344/8736/files/9519106224.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34515707504.pdf
    • https://cdn.shopify.com/s/files/1/0433/7745/9363/files/75934125776.pdf
    • https://cdn.shopify.com/s/files/1/0430/4008/0021/files/26790049617.pdf
    • https://cdn.shopify.com/s/files/1/0430/2385/9873/files/kedemeresovoxozatavos.pdf
    • https://cdn.shopify.com/s/files/1/0432/8102/3140/files/bank_loan_proposal_sample.pdf
    • https://cdn.shopify.com/s/files/1/0432/6896/4505/files/canara_bank_credit_card_application_form_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/6112/5025/files/tekuxizadosiwu.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_off000059fc.bin
6bbef02201b1dae3a5e46c99605ca304bb5e00bf767a4e6ab8abb68f8b1b9cf4
pdf-font-stream PDF embedded font (sfnt) at offset 0x59FC 5492 bytes
font_01_sfnt_off00006cca.bin
8d0ed243104b0de30a25e5242206b342da143588b269f8ecd25e618833f00c45
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CCA 12496 bytes
font_02_sfnt_off00009322.bin
c61e72d95c5ef31b5560985aece48c9e271eb673632b8612052f79a5830c1da8
pdf-font-stream PDF embedded font (sfnt) at offset 0x9322 9964 bytes