Malicious PDF — malware analysis report

Static analysis result for SHA-256 fca430c13ad7e256…

MALICIOUS

PDF

58.8 KB Created: 2020-08-14 00:46:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af1295f0b01248ac9fb65f00ab51d9c3 SHA-1: 493deac22ffce56278c9565254f3fa7158675216 SHA-256: fca430c13ad7e2565d55d1cc75ac79f229ada4c7ffa67e2e22b0fb1082f1026e
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with a critical heuristic firing indicating a malicious redirector. The primary URL, https://ttraff.com/pify?keyword=blogging+platforms+2019, is likely used to obscure the ultimate destination of the malicious payload. The document body itself is largely garbled but contains references to the redirector and other URLs hosted on Shopify and various unknown domains, suggesting a link farm or SEO poisoning tactic to lure victims.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/pify?keyword=blogging+platforms+2019
    • http://xiwobu.tracymedeiros.com/uploads/1/3/2/3/132303382/bujewekipumexiv_nizizemedotigob_joner.pdf
    • http://toxifoxe.myssma.com/uploads/1/3/2/7/132740285/kugamenos.pdf
    • http://kogowuxo.oliviacliftonbligh.com/uploads/1/3/2/8/132814930/satenojov-sofigo-rivavu.pdf
    • http://files.azerperlite.com/uploads/1/3/1/3/131383743/12b900.pdf
    • http://gafubotat.unbreakable.be/uploads/1/3/1/6/131607407/6b3833250.pdf
    • https://cdn.shopify.com/s/files/1/0439/4234/6907/files/ditusemaxotasodoriwizibu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7310/1214/files/94710656349.pdf
    • https://cdn.shopify.com/s/files/1/0434/3182/1473/files/gagufuvewakikudemozikekox.pdf
    • https://cdn.shopify.com/s/files/1/0434/8579/0365/files/lisonebudasedez.pdf
    • https://cdn.shopify.com/s/files/1/0432/7342/0965/files/kixun.pdf
    • https://cdn.shopify.com/s/files/1/0430/3713/0914/files/domivuwurujenededurawe.pdf
    • https://cdn.shopify.com/s/files/1/0430/5901/9933/files/95711281341.pdf
    • https://cdn.shopify.com/s/files/1/0434/7727/0692/files/french_revolution_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0429/6992/3740/files/92027003851.pdf
    • https://cdn.shopify.com/s/files/1/0429/3676/2527/files/13991451509.pdf
    • https://cdn.shopify.com/s/files/1/0434/0239/5813/files/7969749599.pdf
    • https://cdn.shopify.com/s/files/1/0432/6742/4409/files/business_english_writing.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_off0000a81d.bin
bcf0d902747c7f16fa87028d35e83d3ac0d87d3ae0b3317f51158b61cba1dd41
pdf-font-stream PDF embedded font (sfnt) at offset 0xA81D 5752 bytes
font_01_sfnt_off0000bba0.bin
261c8712af82a32b3ad9bc63cb0672a00810e54363278715d23968d01b1c6747
pdf-font-stream PDF embedded font (sfnt) at offset 0xBBA0 10188 bytes