Malicious PDF — malware analysis report

Static analysis result for SHA-256 a509e7cf6eb0dcb0…

MALICIOUS

PDF

41.0 KB Created: 2020-07-31 19:10:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eafbf911d39935784ddb6b2384aa7820 SHA-1: cee5544daa1ef31520676b1c3a9960c1c497b21e SHA-256: a509e7cf6eb0dcb0250e02a71dc7198e296e2a3f2e83b8d8d2f694787f6e4448
130 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one critical heuristic identifying it as a malicious redirector pointing to 'https://ttraff.ru/pify?keyword=viryual+girl+hd'. Another heuristic flags it as a PDF link farm, with many links pointing to Shopify domains, likely for SEO manipulation or to host further malicious content. The document body contains a call-to-action phrase, reinforcing the likelihood of a user-driven malicious workflow.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=viryual+girl+hd
    • http://files.adarksouvenir.com/uploads/1/3/0/7/130775704/613287.pdf
    • http://files.genuinelyjoyful.com/uploads/1/3/1/4/131438059/raxofekutojowasowol.pdf
    • http://files.georgehi.net/uploads/1/3/1/8/131871424/towiximefiwonol.pdf
    • http://files.northtexasmeasurementassociation.com/uploads/1/3/0/9/130969499/kebim.pdf
    • https://cdn.shopify.com/s/files/1/0428/4655/2227/files/lozupakubit.pdf
    • https://cdn.shopify.com/s/files/1/0431/7410/1160/files/47514965821.pdf
    • https://cdn.shopify.com/s/files/1/0437/4190/5050/files/62042579966.pdf
    • https://cdn.shopify.com/s/files/1/0430/5970/8058/files/81257747826.pdf
    • https://cdn.shopify.com/s/files/1/0439/8533/8526/files/23759395794.pdf
    • https://cdn.shopify.com/s/files/1/0431/7963/8942/files/witojume.pdf
    • https://cdn.shopify.com/s/files/1/0437/7359/1703/files/jetatoxixoxejutoku.pdf
    • https://cdn.shopify.com/s/files/1/0429/6481/1927/files/fukakata.pdf
    • https://cdn.shopify.com/s/files/1/0431/6731/8167/files/pasabarewarosaku.pdf
    • https://cdn.shopify.com/s/files/1/0429/1058/0899/files/5341472210.pdf
    • https://cdn.shopify.com/s/files/1/0435/9120/5021/files/78106787289.pdf
    • https://cdn.shopify.com/s/files/1/0430/1206/3391/files/gutigobibisuxomepe.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
stream_003_off000057aa.bin
b904c8ca0c001af5a97cc907d0966b60aa8fbb7c8b6bcc17a93bf97869e47282
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x57AA 4444 bytes
font_01_sfnt_off000066c0.bin
6f16f706006dd27fa6ef6977b4ec95e8523326048550643ca185adf988944a23
pdf-font-stream PDF embedded font (sfnt) at offset 0x66C0 10104 bytes
font_02_sfnt_off00008918.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x8918 4324 bytes