Malicious PDF — malware analysis report

Static analysis result for SHA-256 397c1cb0b83d8b9f…

MALICIOUS

PDF

38.6 KB Created: 2020-08-07 08:50:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 739623139e31cb18b82d6eaa70f88e45 SHA-1: 151c9c24c89128f5a304128430eaf2cff214b8a5 SHA-256: 397c1cb0b83d8b9f41710b645fc1882b80af5ff023e55bf511466c741a0dcffc
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure related to song tabs, and the malicious URL is directly related to this lure. The heuristic firings confirm the presence of a malicious redirector and a link farm, indicating a phishing or redirection 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.ru/pify?keyword=green+day+boulevard+of+broken+dreams+tab+pdf
    • http://files.motownfreedombakery.com/uploads/1/3/1/4/131406473/8100490.pdf
    • http://files.southernnailexpo.com/uploads/1/3/0/9/130969384/vodal-natikotepi-depur-gozot.pdf
    • http://files.francescaterberg.com/uploads/1/3/1/4/131437753/misimog_bumabodikun_warebulugetigub_tuvimufe.pdf
    • http://files.nammb.org/uploads/1/3/1/3/131384359/gekoranekenimag.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/49480603562.pdf
    • https://cdn.shopify.com/s/files/1/0429/9853/0201/files/29183357495.pdf
    • https://cdn.shopify.com/s/files/1/0434/8346/3832/files/51039073356.pdf
    • https://cdn.shopify.com/s/files/1/0434/2412/0984/files/slack_for_mac.pdf
    • https://cdn.shopify.com/s/files/1/0437/2611/0885/files/zidatavuwurikuk.pdf
    • https://cdn.shopify.com/s/files/1/0428/6336/2204/files/besininimewagopumovipuki.pdf
    • https://cdn.shopify.com/s/files/1/0431/7901/6349/files/61869425605.pdf
    • https://cdn.shopify.com/s/files/1/0433/9289/3093/files/fowijuzekewozagifoju.pdf
    • https://cdn.shopify.com/s/files/1/0429/9954/6009/files/structure_of_immunoglobulins.pdf
    • https://cdn.shopify.com/s/files/1/0439/5106/3195/files/e6_a2_85_e8_8a_b1.pdf
    • https://cdn.shopify.com/s/files/1/0428/4035/9068/files/5904005791.pdf
    • https://cdn.shopify.com/s/files/1/0427/9818/6663/files/44970449705.pdf
    • https://cdn.shopify.com/s/files/1/0431/2258/9853/files/67084394324.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_off000050af.bin
24e3358793c8c5a0875e4d1082d13006028b59da8e2de98a3f1d7848867a69b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50AF 5584 bytes
font_01_sfnt_off000063a6.bin
2e53861ea13e34235f969e55712e8806f395002a2e37daeb8a32b51d1ba5b5d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63A6 13228 bytes

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