Malicious PDF — malware analysis report

Static analysis result for SHA-256 51d7b65688cb8050…

MALICIOUS

PDF

36.2 KB Created: 2020-08-14 20:16:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c8c7b452f50bba28aa2d1103cc719db SHA-1: 604d6f2669ddfbcd9b6ef493cf5e056f79806d01 SHA-256: 51d7b65688cb805078f4c59013143ac246d891e57c48994987e6159a6f4c5b3d
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.com'. The document body text, though heavily obfuscated, contains the string 'Prada lyrics download pdf', suggesting a lure to trick users into clicking the malicious link. The primary attack pattern involves redirecting the user to malicious infrastructure.

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.com/wb?keyword=prada%20lyrics%20download%20pdf
    • http://files.saskatoonicc.com/uploads/1/3/2/3/132303005/4208279.pdf
    • https://cdn.shopify.com/s/files/1/0430/1327/5811/files/15426213169.pdf
    • https://cdn.shopify.com/s/files/1/0434/3683/4981/files/82116173824.pdf
    • https://cdn.shopify.com/s/files/1/0428/9799/7991/files/62468047258.pdf
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/26128537625.pdf
    • https://cdn.shopify.com/s/files/1/0431/8576/6561/files/la_vie_en_rose_piano_sheet_music_easy.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/12410546401.pdf
    • https://cdn.shopify.com/s/files/1/0431/3009/3728/files/gafikoji.pdf
    • https://cdn.shopify.com/s/files/1/0429/6045/3785/files/vofikej.pdf
    • https://cdn.shopify.com/s/files/1/0447/5568/1431/files/bakunin_statism_and_anarchy.pdf
    • https://cdn.shopify.com/s/files/1/0434/2182/7222/files/fudupumiwojila.pdf
    • https://cdn.shopify.com/s/files/1/0427/9051/8940/files/daguziduxalavobunivewine.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_off000045c7.bin
f83144437f247bdc1184564a3640f018a6664fecd05168df55b3563add916811		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45C7 5344 bytes
font_01_sfnt_off00005813.bin
2e7a568c86121410b729e9eb6826dd009d86cf6d77a71550addc3fe4b9ec3e76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5813 13700 bytes

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