Malicious PDF — malware analysis report

Static analysis result for SHA-256 978a24c3318f7422…

MALICIOUS

PDF

42.8 KB Created: 2020-08-08 17:00:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa9bc691a293936626fcebb11296d234 SHA-1: 8f2899dc034f58115ebefde96378f9e9ed166a05 SHA-256: 978a24c3318f7422133237fafb47dbd032659e9b026544f61aab7e7aaa15ae95
160 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The presence of a 'LOLBin Run Command' heuristic suggests the document is designed to execute commands, likely to facilitate the download and execution of a second-stage payload via the malicious URL. The document body contains garbled text but includes the primary malicious URL.

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/wb?keyword=plan%20de%20unidad%20didactica%20pdf
    • http://luxibilez.bestdealvacations.com/uploads/1/3/0/7/130776485/3207019.pdf
    • http://files.berrow-society.org/uploads/1/3/1/0/131070379/pafeleg.pdf
    • http://files.sbdumpsterrental.com/uploads/1/3/2/8/132814182/9553869.pdf
    • https://cdn.shopify.com/s/files/1/0437/7395/2158/files/ken_blanchard_raving_fans.pdf
    • https://cdn.shopify.com/s/files/1/0429/2640/7833/files/cantina_rooftop_nyc.pdf
    • https://cdn.shopify.com/s/files/1/0428/2744/8476/files/16554616082.pdf
    • https://cdn.shopify.com/s/files/1/0429/4311/9527/files/ripanafuzesave.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/37278413385.pdf
    • https://cdn.shopify.com/s/files/1/0437/7765/4935/files/black_sabbath_war_pigs_tab.pdf
    • https://cdn.shopify.com/s/files/1/0429/7054/6335/files/vopibe.pdf
    • https://cdn.shopify.com/s/files/1/0432/9055/8620/files/44879207106.pdf
    • https://cdn.shopify.com/s/files/1/0436/1161/9491/files/rajide.pdf
    • https://cdn.shopify.com/s/files/1/0434/5780/6486/files/duladazomip.pdf
    • https://cdn.shopify.com/s/files/1/0431/5018/0503/files/87026268393.pdf
    • https://cdn.shopify.com/s/files/1/0433/2329/3864/files/85367092097.pdf
    • https://cdn.shopify.com/s/files/1/0435/4588/6884/files/algebra_and_number_theory_anna_university_notes.pdf
    • https://cdn.shopify.com/s/files/1/0428/3983/4780/files/powershell_output_to_excel.pdf
    • https://cdn.shopify.com/s/files/1/0437/7106/8565/files/94585905152.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_off000068e6.bin
45d40a52abd65c01f329a01d6889a383170dc7992ee7223648d0fbe9d08890dd
pdf-font-stream PDF embedded font (sfnt) at offset 0x68E6 4876 bytes
font_01_sfnt_off0000799b.bin
df716792a24a6e426b7633b80550b4180abf47f108b9fbfa7b7ec01ff3258b18
pdf-font-stream PDF embedded font (sfnt) at offset 0x799B 10788 bytes