Malicious PDF — malware analysis report

Static analysis result for SHA-256 84534ebd71707984…

MALICIOUS

PDF

72.8 KB Created: 2020-08-26 03:26:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02950cdb12a8b371e9a36d45fac878c4 SHA-1: 2472765a9cfeeb421b80fbbe79ad750137d690d6 SHA-256: 84534ebd717079843ca41d60d98cf62db4a56ae078d0389376d0db293f4df795
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm, with many links pointing to cdn.shopify.com, likely for SEO poisoning or to mask malicious intent. The presence of a 'LOLBin run command' heuristic suggests the document may attempt to execute commands, possibly to download and run a second-stage payload. The document body itself contains the malicious URL and benign-looking PDF links, further supporting the lure.

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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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=43.+0799%252C+79.+0747
    • http://files.missionsquarewhittier.com/uploads/1/3/1/4/131437276/sunozeg.pdf
    • http://files.tomorrowphotos80.com/uploads/1/3/1/8/131871740/522e8e5e.pdf
    • http://pikotiveb.remotecmd.com/uploads/1/3/0/8/130874118/459f6d1b.pdf
    • http://files.betheluccspringgrove.com/uploads/1/3/0/8/130813973/1763275.pdf
    • http://files.clinicalpsychologyservices.com/uploads/1/3/1/6/131606069/xupofosuwijo_xokimuwow_popuxokunuxe.pdf
    • https://cdn.shopify.com/s/files/1/0433/3695/8104/files/evolution_of_multicellular_life_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0431/0191/3244/files/astm_e8_tensile_specimen_dimensions.pdf
    • https://cdn.shopify.com/s/files/1/0430/1812/5465/files/12538535806.pdf
    • https://cdn.shopify.com/s/files/1/0430/6200/1821/files/37599128888.pdf
    • https://cdn.shopify.com/s/files/1/0436/4949/9289/files/milejupigulemonerulireka.pdf
    • https://cdn.shopify.com/s/files/1/0440/6430/9413/files/cats_and_dogs_movie_tamilyogi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5312/9629/files/curso_de_ingles_para_principiantes_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0431/7180/7391/files/82207153510.pdf
    • https://cdn.shopify.com/s/files/1/0432/7079/9510/files/dowuwulozojunuwotulir.pdf
    • https://cdn.shopify.com/s/files/1/0429/5704/5913/files/tuzujokamoj.pdf
    • https://cdn.shopify.com/s/files/1/0433/2827/4582/files/82390807391.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_off0000e1cf.bin
cad0595d7b60f7783811ad992eda978699d28081dd11e8b5b8f67142bba1a4b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xE1CF 4788 bytes
font_01_sfnt_off0000f24b.bin
dff234ab12d12879003a96cadeebedcaf9ee8547fca6df705ed44d05cf637e25
pdf-font-stream PDF embedded font (sfnt) at offset 0xF24B 10604 bytes