Malicious PDF — malware analysis report

Static analysis result for SHA-256 d42c8b513995c9cd…

MALICIOUS

PDF

39.4 KB Created: 2020-08-19 09:49:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f96d9f3cd6fee15d094387eda7f3ea7 SHA-1: f98b52fced0ea01ca14269cef2480a3d481170f2 SHA-256: d42c8b513995c9cda34a648d3012501c2d1a18e5a022b5be36df964579a71a4a
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, which is indicative of a link farm. One of these links redirects to a known malicious domain (ttraff.cc), suggesting a phishing or malware distribution attempt. The document body contains garbled text and a URL that appears to be the primary lure.

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=4+branches+of+military+uniforms
    • http://files.svctm.org/uploads/1/3/2/7/132740352/3227893.pdf
    • https://cdn.shopify.com/s/files/1/0429/0255/2742/files/xegufikoporesirusugor.pdf
    • https://cdn.shopify.com/s/files/1/0435/3340/2266/files/gabung_file_jadi_satu_halaman.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/54300812407.pdf
    • https://cdn.shopify.com/s/files/1/0431/6869/4432/files/59518965407.pdf
    • https://cdn.shopify.com/s/files/1/0434/9257/3334/files/bulewipo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6738/3713/files/singular_and_plural_nouns_activities.pdf
    • https://cdn.shopify.com/s/files/1/0435/3910/3912/files/vokolavuxazos.pdf
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/86384028399.pdf
    • https://cdn.shopify.com/s/files/1/0430/2818/5239/files/57680488013.pdf
    • https://cdn.shopify.com/s/files/1/0440/4792/5413/files/aditya_hridaya_stotra_book_telugu.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_off00005cb2.bin
794102c32193d88ed0db27cea2c7ede8a37ab9b3d75b3abfcf4cbbcd2317b097		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB2 5356 bytes
font_01_sfnt_off00006ebe.bin
25248793097175aa4304f5d7d4a08b27500d606252e2dbf168be531e56025588		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EBE 10076 bytes

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