Malicious PDF — malware analysis report

Static analysis result for SHA-256 b53de2cead3fd68e…

MALICIOUS

PDF

37.0 KB Created: 2020-08-14 17:13:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 947b138ab48e018c35f55847edb4f5c9 SHA-1: f8465d00b6090484fbc7dc90dbd947182fbf01a9 SHA-256: b53de2cead3fd68e48746d11338cba20be4909f98249b3987b3feb4daa16544a
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be part of a lure, referencing popular search terms. This suggests the document's purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted, limiting the analysis of direct payload execution.

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=ayo+and+teo+dance+videos++2017
    • http://files.santiagolopezphoto.com/uploads/1/3/1/1/131164011/6eeadac8f24dd.pdf
    • https://cdn.shopify.com/s/files/1/0434/8562/6520/files/98287617607.pdf
    • https://cdn.shopify.com/s/files/1/0427/8878/2236/files/tugevabopukedunore.pdf
    • https://cdn.shopify.com/s/files/1/0433/7618/1398/files/number_of_weeks_in_a_year.pdf
    • https://cdn.shopify.com/s/files/1/0438/1714/0386/files/euro_pick_up.pdf
    • https://cdn.shopify.com/s/files/1/0430/3365/7507/files/33893704974.pdf
    • https://cdn.shopify.com/s/files/1/0434/6786/6278/files/cash_loan_agreement_format_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0430/6147/7527/files/rabibugedujiwonizupipixa.pdf
    • https://cdn.shopify.com/s/files/1/0432/9085/3540/files/dogosumamoxafi.pdf
    • https://cdn.shopify.com/s/files/1/0433/8561/8583/files/77231738039.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/medarovadujagowurevasote.pdf
    • https://cdn.shopify.com/s/files/1/0440/5621/5702/files/antioxidant_activity_of_flavonoids.pdf
    • https://cdn.shopify.com/s/files/1/0435/9880/7202/files/60938845428.pdf
    • https://cdn.shopify.com/s/files/1/0434/5751/1590/files/rawosakazijitatoxiw.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_off00004514.bin
6b8ddcde01e7f5858d5f23a7c60a4c265ffb89ae80a058753fa8ec15d430f62b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4514 5364 bytes
font_01_sfnt_off00005770.bin
97f4e321c4337394321b9d74f16a77a62b54c40bc612b2b21f5eba016a7c0d4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5770 2132 bytes
font_02_sfnt_off0000612b.bin
217503763071e3d935da4983c74c993d9c928f16c85d4c52984f5921f51141db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x612B 11052 bytes

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