Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc6dad9eb9cbd07…

MALICIOUS

PDF

49.0 KB Created: 2020-08-30 16:08:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8cda95c0cea4eafcae77d0aec2ceb7c1 SHA-1: 7bff07e58f9c14dad32145d66235892ab4570389 SHA-256: 1dc6dad9eb9cbd078e89cd13d78376d94414647b5db7605c3c3a58755a0801b8
160 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 a link that redirects to a malicious domain, masquerading as a software download. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms this redirection to known malicious infrastructure. Additionally, the 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggests that the document may be intended to trick the user into believing they need a password to access further content, a common tactic to bypass gateway security. The presence of numerous embedded links, detected by 'PDF_SEO_LINK_FARM', further supports the malicious intent of driving traffic to external sites.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.club/wix?keyword=hl+tag+converter+cs+1.6+descargar
    • https://cdn.shopify.com/s/files/1/0437/0215/7466/files/xesamemadifa.pdf
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/78364262853.pdf
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/gudubi.pdf
    • https://cdn.shopify.com/s/files/1/0457/7152/2214/files/breeam_nc_2018_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/2047/6828/files/6508057549.pdf
    • https://cdn.shopify.com/s/files/1/0450/9591/1577/files/cable_voltage_drop_calculation.pdf
    • https://cdn.shopify.com/s/files/1/0445/3980/5855/files/gulubalisofagikesanim.pdf
    • https://cdn.shopify.com/s/files/1/0432/3613/0983/files/53095218507.pdf
    • https://cdn.shopify.com/s/files/1/0433/2571/8678/files/botrytis_cinerea_strawberry.pdf
    • https://cdn.shopify.com/s/files/1/0431/5018/0514/files/kapumot.pdf
    • https://cdn.shopify.com/s/files/1/0429/8991/2218/files/48599856018.pdf
    • https://cdn.shopify.com/s/files/1/0433/5242/4598/files/2532408263.pdf
    • https://cdn.shopify.com/s/files/1/0427/4490/5884/files/31346772369.pdf
    • https://cdn.shopify.com/s/files/1/0431/5768/4375/files/modals_certainty_probability_possibility_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0431/3546/7669/files/bufedarumigobuj.pdf
    • https://cdn.shopify.com/s/files/1/0428/4507/7660/files/oxford_primary_skills_reading_and_writing_6_audio.pdf
    • https://cdn.shopify.com/s/files/1/0431/2170/5124/files/pusokuxusazojejafewak.pdf
    • https://cdn.shopify.com/s/files/1/0436/9724/2280/files/nalofaveguxesenaj.pdf
    • https://cdn.shopify.com/s/files/1/0430/3791/7335/files/topabenosof.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_off00006ab1.bin
ec70b0147f8e01e6825494f4e0f173575a5c45a79635efe414052f9e56ee88a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB1 5364 bytes
font_01_sfnt_off00007d02.bin
fd88ad8ddebf295be15f0178905443061b89ac4d2c9d67e2ebda13571f787b3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D02 10392 bytes
font_02_sfnt_off0000a0c8.bin
91c92fab729f552433758475f1ecf6a366c66c74ae6b4dd9e31a9a0100f2b42c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA0C8 16332 bytes

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