Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6ee4722ccce9808…

MALICIOUS

PDF

40.1 KB Created: 2020-10-02 04:51:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab42874350fc5e83eb71be7561bc80af SHA-1: d4b5b9574aff30a00cfab46b5d7a5905ab189ca1 SHA-256: d6ee4722ccce98080de1e3eac623245cc0e05e02fe8ee4a2ba694c7d42846ec4
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that the link at https://gettraff.ru/strik?keyword=brihaspati+mantra+in+bengali+pdf leads to known malicious infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many pointing to Shopify domains, suggesting a link farm designed to manipulate search engine results or distribute content. The presence of a visual download button lure further supports a malicious intent to trick the user into clicking the malicious link.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://gettraff.ru/strik?keyword=brihaspati+mantra+in+bengali+pdf
    • http://files.vedajess.com/uploads/1/3/0/7/130738875/9283140.pdf
    • http://files.nhgahplgsresidency.com/uploads/1/3/1/6/131636789/kitumumofumupi-nodafesadak-rosakurovil.pdf
    • http://files.gerardatkinson.com/uploads/1/3/1/4/131406604/liweba.pdf
    • http://vejen.destrierbooks.com/uploads/1/3/1/4/131408899/zevami_kadepidanev.pdf
    • http://files.quartermoonbooks.com/uploads/1/3/0/7/130740211/kepela.pdf
    • http://xaxexemib.janislynnecards.com/uploads/1/3/1/3/131398024/1409669.pdf
    • https://cdn.shopify.com/s/files/1/0479/1805/5591/files/zegufowulapadijatabab.pdf
    • https://cdn.shopify.com/s/files/1/0432/1725/6603/files/67199608184.pdf
    • https://cdn.shopify.com/s/files/1/0440/8311/8232/files/free_people_search_yahoo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4456/9242/files/kofojusizumom.pdf
    • https://cdn.shopify.com/s/files/1/0436/9501/4042/files/virginia_drivers_license_renewal_over_80.pdf
    • https://cdn.shopify.com/s/files/1/0495/8561/9094/files/pozujigodus.pdf
    • https://cdn.shopify.com/s/files/1/0482/7575/1067/files/choices_apk_hack_keys.pdf
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/ap_us_history_sat_subject_test_practice.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000513f.bin
0b78aeb1e37ca57616029573425570f463bc62174d924bfc044c89ca4a5518e2
pdf-font-stream PDF embedded font (sfnt) at offset 0x513F 5644 bytes
font_01_sfnt_off00006443.bin
5ee6be185654ea2ed9116057b194fb98b037b5ba8d01d2c8f24f79a202caaf75
pdf-font-stream PDF embedded font (sfnt) at offset 0x6443 10008 bytes
font_02_sfnt_off000086d1.bin
8386501574fc7cf210cd188d79e5b0c10d6582fd7405989fb9fa9954bc04555e
pdf-font-stream PDF embedded font (sfnt) at offset 0x86D1 3076 bytes