Malicious PDF — malware analysis report

Static analysis result for SHA-256 4268d73a873385be…

MALICIOUS

PDF

36.8 KB Created: 2020-08-14 11:18:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa1b80fdb35d84619077d3f1116137a6 SHA-1: f126aff89dcb4ee974f6d92ddae355e66a9a7cb0 SHA-256: 4268d73a873385be86ea582784dae78d3e794c77e60f8e260625c62006838616
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.ru). This suggests a link farm or SEO manipulation tactic designed to drive traffic to malicious infrastructure. The document body, though heavily corrupted, contains the text 'Bride and groom photoshop brushes free', indicating a lure to entice users to click the malicious link. No scripts were extracted from this sample.

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.ru/pify?keyword=bride+and+groom+photoshop+brushes+free
    • http://files.tlc-writingtours.com/uploads/1/3/2/7/132740805/bilavikus.pdf
    • http://risigo.montanalanguageteachers.org/uploads/1/3/1/0/131070450/4255822.pdf
    • http://lefojil.tarinarosesocialmedia.com/uploads/1/3/2/8/132814930/xepiwajaliz_sanim.pdf
    • http://gufulim.hvrcc.com/uploads/1/3/0/9/130969335/7640c9ebea94d5.pdf
    • http://files.god4ce.com/uploads/1/3/1/6/131637218/dozogoperal.pdf
    • https://cdn.shopify.com/s/files/1/0437/6700/5333/files/the_budget_savvy_wedding_planner.pdf
    • https://cdn.shopify.com/s/files/1/0446/2074/2819/files/foratojunewor.pdf
    • https://cdn.shopify.com/s/files/1/0430/1013/0073/files/36160600932.pdf
    • https://cdn.shopify.com/s/files/1/0440/0971/7910/files/nigegepipibof.pdf
    • https://cdn.shopify.com/s/files/1/0428/7679/7081/files/zebogomodos.pdf
    • https://cdn.shopify.com/s/files/1/0430/6000/2967/files/fluke_289_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/2410/5121/files/64075306705.pdf
    • https://cdn.shopify.com/s/files/1/0431/0522/2822/files/makalah_bahaya_rokok_bagi_kesehatan.pdf
    • https://cdn.shopify.com/s/files/1/0435/5339/0741/files/sowazexusojozufobivamed.pdf
    • https://cdn.shopify.com/s/files/1/0429/2280/3363/files/godogexefixigajubuvofokeb.pdf
    • https://cdn.shopify.com/s/files/1/0429/3564/8409/files/perpetuities_and_accumulations_act_1964.pdf
    • https://cdn.shopify.com/s/files/1/0433/0081/5006/files/fallout_4_change_name.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_off00005241.bin
8046c775ada37675f61e8e647b80444e8b73291d96c672884c645989806cc152
pdf-font-stream PDF embedded font (sfnt) at offset 0x5241 5612 bytes
font_01_sfnt_off00006520.bin
660a0a0e2a22d2506f9140306bbf6270c1f1407de2591100aa1409ed0b1fad38
pdf-font-stream PDF embedded font (sfnt) at offset 0x6520 9716 bytes