Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbda925b658da6bb…

MALICIOUS

PDF

48.7 KB Created: 2020-08-02 17:03:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88ada107493aba70d25771c3f4a5df92 SHA-1: 3ef9d7a4df9f306ddc8ec616691d9a9d09a34f77 SHA-256: dbda925b658da6bb528d80bc4308fabc64a80623576df74c8b6c311703f423d4
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains hosting PDF files. One critical heuristic identified a link to a known malicious redirector infrastructure at 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL, suggesting it is the primary lure. The presence of numerous links and the redirector indicate a phishing or scam 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=wondershare+video+converter+ultimate+key
    • http://wubinut.jimmymooreguitar.com/uploads/1/3/1/4/131438539/78f489b3ab1a34.pdf
    • http://files.upholsteringmelbourne.com.au/uploads/1/3/1/1/131164488/kugevixuxofugakafa.pdf
    • http://files.theallergyfreezone.com/uploads/1/3/0/9/130969535/bexarulozaxiduxexuno.pdf
    • http://files.justchryssbeauty.com/uploads/1/3/1/8/131871701/rexiruliwu.pdf
    • http://files.davemcdermand.com/uploads/1/3/0/7/130739522/9328834.pdf
    • https://cdn.shopify.com/s/files/1/0432/0365/7887/files/sisigagixutisaw.pdf
    • https://cdn.shopify.com/s/files/1/0436/6965/1606/files/tumifuxikadajor.pdf
    • https://cdn.shopify.com/s/files/1/0433/9122/1923/files/84530063876.pdf
    • https://cdn.shopify.com/s/files/1/0431/1869/0458/files/64461907673.pdf
    • https://cdn.shopify.com/s/files/1/0428/4809/2323/files/winerununiweve.pdf
    • https://cdn.shopify.com/s/files/1/0436/8164/4697/files/reflected_in_you_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/9531/7911/files/bulitidovinosijosuko.pdf
    • https://cdn.shopify.com/s/files/1/0429/9456/5271/files/blade_runner_unicorn.pdf
    • https://cdn.shopify.com/s/files/1/0430/7143/9001/files/jimijunawuda.pdf
    • https://cdn.shopify.com/s/files/1/0433/8106/3838/files/pawevifuxi.pdf
    • https://cdn.shopify.com/s/files/1/0430/9821/0461/files/16365436915.pdf
    • https://cdn.shopify.com/s/files/1/0431/0364/9953/files/microsoft_visual_c_2008_redistributable_x64.pdf
    • https://cdn.shopify.com/s/files/1/0438/3899/6642/files/wiritima.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_off00007244.bin
61f34a885df2b209d67142ff42e9dcee3faea0be7155ce3251971995b93bf769
pdf-font-stream PDF embedded font (sfnt) at offset 0x7244 5300 bytes
font_01_sfnt_off0000842b.bin
d29a444b5997c4a80175bbc3fd7beeb98df41b63889104c48c6ea5ef3a897f68
pdf-font-stream PDF embedded font (sfnt) at offset 0x842B 10128 bytes
font_02_sfnt_off0000a6eb.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xA6EB 4324 bytes