Malicious PDF — malware analysis report

Static analysis result for SHA-256 f94813c858ef83d9…

MALICIOUS

PDF

48.0 KB Created: 2020-08-06 02:08:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e18ea069d8047f02ebe2d8ca63c4259 SHA-1: a69431fb99c8bfb64e958a86d33ee31593f53433 SHA-256: f94813c858ef83d96cb16bac28cbf2d75e6bbc95a5d2e502fcd0680cbcf84d5a
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link redirects to a known malicious redirector. The document body text, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=afinidades+electivas+de+goethe+pdf', which is flagged as malicious. This suggests a phishing or scam attempt using a link farm to obscure the malicious destination.

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=afinidades+electivas+de+goethe+pdf
    • http://files.startingblocksplus.org/uploads/1/3/2/6/132680784/sufoxepoma.pdf
    • http://files.liffordhealthcentre.com/uploads/1/3/2/7/132740905/lezotoko.pdf
    • http://files.thomas.rentals/uploads/1/3/1/8/131856065/8882619.pdf
    • http://liluket.pkjoypoet.com/uploads/1/3/2/6/132680813/8594078.pdf
    • https://cdn.shopify.com/s/files/1/0436/8872/2597/files/tumijuwovisor.pdf
    • https://cdn.shopify.com/s/files/1/0435/9100/8418/files/taked.pdf
    • https://cdn.shopify.com/s/files/1/0430/2356/4957/files/70239099495.pdf
    • https://cdn.shopify.com/s/files/1/0429/5370/3590/files/30249580097.pdf
    • https://cdn.shopify.com/s/files/1/0437/6195/9069/files/engineering_economy_16th_edition_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0431/0047/1456/files/45190677465.pdf
    • https://cdn.shopify.com/s/files/1/0434/6062/4549/files/2016_honda_accord_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/5036/0232/files/58721888832.pdf
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/longman_writer_9th_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/8009/6667/files/32382093353.pdf
    • https://cdn.shopify.com/s/files/1/0428/8145/0147/files/8804348200.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_off00007aee.bin
136ee0f1d7a168fde1e08a5a4b5c083a327f46863066be9306909be92fb97f5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AEE 5372 bytes
font_01_sfnt_off00008d45.bin
21f775ae5243a42f9eb8dd95e8ef9df661645c04ba2b69fcf5583bb2faff641e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D45 11216 bytes

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