Malicious PDF — malware analysis report

Static analysis result for SHA-256 b64883cb3c538318…

MALICIOUS

PDF

84.0 KB Created: 2020-08-09 12:42:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84249165caf5b2b47b9a71cb8e1815b9 SHA-1: bd089feff1696b89a8d7f70fff8ab99dcf182612 SHA-256: b64883cb3c53831879c5813169e5625d26238f8327d85e18269fdc0f7a1b2b37
120 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 directs to a known malicious redirector. The document body text, though partially corrupted, includes the phrase 'Avortement volontaire pdf' and the URL that triggered the malicious redirector heuristic. This suggests the document is designed as a lure to redirect users to malicious infrastructure.

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=avortement+volontaire+pdf
    • http://masudeg.elizabethbarattalmhc.com/uploads/1/3/1/3/131384635/6348040.pdf
    • http://files.asaanalytics.com/uploads/1/3/1/4/131438313/d20875.pdf
    • http://files.thrifthappy.com/uploads/1/3/2/3/132302919/vodajase.pdf
    • http://files.hungerandthirsttheatre.com/uploads/1/3/0/9/130969873/fubosewurawu.pdf
    • http://files.shannonclunierealtor.com/uploads/1/3/0/8/130874633/5571723.pdf
    • https://cdn.shopify.com/s/files/1/0428/7679/7081/files/pipedixodufubaxuluxudiz.pdf
    • https://cdn.shopify.com/s/files/1/0434/7861/4168/files/92479146246.pdf
    • https://cdn.shopify.com/s/files/1/0432/0952/3355/files/zipumitedafusup.pdf
    • https://cdn.shopify.com/s/files/1/0432/3203/4976/files/solutions_manuals.pdf
    • https://cdn.shopify.com/s/files/1/0437/6559/6321/files/retunixudole.pdf
    • https://cdn.shopify.com/s/files/1/0440/3258/9989/files/boogie_wonderland_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0439/0528/6296/files/xelafowe.pdf
    • https://cdn.shopify.com/s/files/1/0439/1341/2760/files/81081047644.pdf
    • https://cdn.shopify.com/s/files/1/0434/1052/2279/files/nutrition_an_applied_approach_5th_edition_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/5850/3590/files/kagetsu_tohya_download.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
stream_003_off00006de8.bin
4aa947c6b93955f7bd13a47689f5a0981bf12c542bedccae1f82a7d897708682		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x6DE8 51080 bytes
font_01_sfnt_off000106b0.bin
69e152bb50f4ccc6bf3f50da51cc9f0b8a0b3e061382aba9eacdab2b8ce79e96		 pdf-font-stream PDF embedded font (sfnt) at offset 0x106B0 5060 bytes
font_02_sfnt_off000117d9.bin
12d0cfc35b0bb653e2d0971d7ac2f30c6bfebdcccf6cd968da5d748fcf46c16f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x117D9 13520 bytes

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