Malicious PDF — malware analysis report

Static analysis result for SHA-256 df74354a5d197387…

MALICIOUS

PDF

49.0 KB Created: 2020-08-04 21:08:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92a6edc20fd3928b3d45c4a848d8bd38 SHA-1: 581689b70270212d81506ea9c5c46e97116c3b68 SHA-256: df74354a5d197387c810d5bd30338c4863444c49743f0f9ebe4463f955a5e851
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically `https://ttraff.cc/pify?keyword=recurrent+spontaneous+abortion+pdf`. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The PDF also contains a large number of embedded links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic to distribute the malicious content. No scripts were extracted, but the presence of the malicious redirector URL is sufficient evidence of malicious intent.

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=recurrent+spontaneous+abortion+pdf
    • http://simabefo.zeniefoundation.org/uploads/1/3/0/9/130969539/5557941.pdf
    • http://files.celianeri.com/uploads/1/3/1/1/131164048/410e30d3d0.pdf
    • http://files.ignitedance.com/uploads/1/3/2/6/132681878/5c85c5f.pdf
    • http://files.oceanworksgroup.com/uploads/1/3/1/4/131453370/sevelowibafis_vasaba_zojax.pdf
    • http://files.nicolechinuntdet.com/uploads/1/3/1/8/131857758/db4adf4.pdf
    • https://cdn.shopify.com/s/files/1/0432/0067/6001/files/sketch_crack_mac.pdf
    • https://cdn.shopify.com/s/files/1/0428/4760/0807/files/komivepevaretagupugejeg.pdf
    • https://cdn.shopify.com/s/files/1/0429/9964/4314/files/trane_xr80_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/2174/6847/files/gowijideligewidek.pdf
    • https://cdn.shopify.com/s/files/1/0429/0389/6230/files/defizawitolukatawidupu.pdf
    • https://cdn.shopify.com/s/files/1/0435/8494/6333/files/65787465114.pdf
    • https://cdn.shopify.com/s/files/1/0432/7122/5494/files/xofavunazup.pdf
    • https://cdn.shopify.com/s/files/1/0431/2973/3282/files/1605705358.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/favubedezemopazejive.pdf
    • https://cdn.shopify.com/s/files/1/0438/3539/2150/files/wokevagegaj.pdf
    • https://cdn.shopify.com/s/files/1/0435/3956/2651/files/2300299619.pdf
    • https://cdn.shopify.com/s/files/1/0431/1685/5457/files/simuwinog.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_off0000806e.bin
1256c7c2f97414dbf2f7c7fada841303bca7891834eda7f98b713bb580bc9e2f
pdf-font-stream PDF embedded font (sfnt) at offset 0x806E 5264 bytes
font_01_sfnt_off00009265.bin
3013771fc09b625e46462565e2abda99a8c7512073a51d6787b38f28e1278499
pdf-font-stream PDF embedded font (sfnt) at offset 0x9265 10680 bytes