Malicious PDF — malware analysis report

Static analysis result for SHA-256 9776ca389dae2750…

MALICIOUS

PDF

115.1 KB Created: 2020-08-27 17:07:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48e7971c37a3071a9af91b65ac005d6b SHA-1: cccf694629a7caabd368e28d8b0d11fc8d0ad78f SHA-256: 9776ca389dae2750bebd572158195a25c2afe38cc27a66a1692a5e3a13592d59
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=la+cuarta+dimension+2+libro+pdf`. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The presence of a PDF link farm heuristic further indicates a campaign to distribute malicious links. The file is likely a social engineering lure to redirect users to malicious content.

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=la+cuarta+dimension+2+libro+pdf
    • http://files.joyfullfoods.ca/uploads/1/3/1/6/131606133/7542837.pdf
    • http://files.mrsargus.com/uploads/1/3/2/6/132695194/d69b9a6d.pdf
    • http://files.laurel-lakes.net/uploads/1/3/1/4/131453674/pedozugagibalok.pdf
    • https://cdn.shopify.com/s/files/1/0438/5023/6064/files/12574939780.pdf
    • https://cdn.shopify.com/s/files/1/0432/7319/1588/files/choose_your_own_adventure_story_template.pdf
    • https://cdn.shopify.com/s/files/1/0437/4482/1409/files/zivinuwezukufif.pdf
    • https://cdn.shopify.com/s/files/1/0427/5824/2470/files/wondershare_filmora_9_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0441/0313/9480/files/48020759613.pdf
    • https://cdn.shopify.com/s/files/1/0433/6753/0657/files/60000_milliseconds_to_seconds.pdf
    • https://cdn.shopify.com/s/files/1/0434/3247/6838/files/essential_math_for_data_science.pdf
    • https://cdn.shopify.com/s/files/1/0430/9372/1255/files/zawavorijaloputekiru.pdf
    • https://cdn.shopify.com/s/files/1/0431/3051/9716/files/persuasive_writing_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0432/7908/9824/files/37527793180.pdf
    • https://cdn.shopify.com/s/files/1/0438/1392/9122/files/73402463717.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_off00017be8.bin
13759f735c0c2b5cc32073afd56a9832297f63213743c824b02582c359f20f33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17BE8 5512 bytes
font_01_sfnt_off00018e89.bin
49743e313d5ed8016ee60fffacef5ec0e60c1a831af5955ffba6dc35f2c60caf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18E89 15688 bytes

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