Malicious PDF — malware analysis report

Static analysis result for SHA-256 c34b8c6c63a9b6bb…

MALICIOUS

PDF

46.5 KB Created: 2020-08-02 01:40:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5572b9917c02e5ea94997380a39f55f2 SHA-1: 7d397f1e3c33cad89b0c100a784b3e9fc682e372 SHA-256: c34b8c6c63a9b6bb43d79be74f440c25691d5c2420d1341a35c1865329db7225
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a PDF link farm. One of these links, 'https://ttraff.ru/pify?keyword=smb+192.+168+1.+1', points to known malicious redirector infrastructure. The document body itself contains garbled text but includes the same suspicious URL, suggesting it's the primary lure. The presence of a link farm indicates an attempt to distribute malicious content or conduct phishing operations.

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=smb+192.+168+1.+1
    • http://files.pilgrimlbc.com/uploads/1/3/1/8/131871501/jukabosor_wazel_sulavegi.pdf
    • http://files.showtimeproductionsdj95.com/uploads/1/3/1/4/131407051/c19050effc.pdf
    • http://files.legacyhorselogging.com/uploads/1/3/1/6/131636990/rakofidi-tuxujojaxeki.pdf
    • https://cdn.shopify.com/s/files/1/0436/4464/9630/files/gefifilalef.pdf
    • https://cdn.shopify.com/s/files/1/0434/8814/9668/files/xuwexot.pdf
    • https://cdn.shopify.com/s/files/1/0430/3863/8241/files/japina.pdf
    • https://cdn.shopify.com/s/files/1/0430/8136/7712/files/74002364890.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/xepusafulijaduxi.pdf
    • https://cdn.shopify.com/s/files/1/0434/4083/2678/files/baxuzar.pdf
    • https://cdn.shopify.com/s/files/1/0431/4028/4577/files/88449859223.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20116177671.pdf
    • https://cdn.shopify.com/s/files/1/0431/8180/1629/files/57489862593.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_off00006ade.bin
135cefff6dca23678911fb540757550aa7f2dd07b6ee7cd504cb0193663c069c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ADE 2992 bytes
font_01_sfnt_off00007587.bin
c1929ff5d3e95dc343d06d83ee27236000dc365651b811817f9e476728d31a89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7587 5280 bytes
font_02_sfnt_off00008776.bin
d79e6f63b922275d20b7401676354baa45a34b0ebe2114c415b5d2c6a30ffbb0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8776 11836 bytes

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