Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1dc67def51c1f82…

MALICIOUS

PDF

47.8 KB Created: 2020-09-01 22:43:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a60c09eeb5cc1038c3ddafeebbfacae SHA-1: f601ac97d79b9a9cc9a2005cd7c1243cfec4ec71 SHA-256: e1dc67def51c1f8285c258db53e2abfba4ec6249fb8a1e60b88ab3b9a4a03f60
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/wix?keyword=aldenham+school+uniform+shop'. This URL is presented within the document body, disguised as a link to a school uniform shop. The PDF also exhibits characteristics of a link farm, with numerous external links, suggesting a broad phishing or SEO poisoning campaign. No scripts were extracted, but the presence of a malicious redirector is sufficient to indicate a phishing attempt.

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.cc/wix?keyword=aldenham+school+uniform+shop
    • https://static.usrfiles.com/ugd/1849a1_d8cf3b8c80d34f2185a9c67500c0aac1.pdf
    • https://static.usrfiles.com/ugd/345929_1face0ceae364d67a2291b8cccf4609d.pdf
    • https://static.usrfiles.com/ugd/fb41f9_9dffffaaf9214b46aec9d29241f03bd4.pdf
    • https://cdn.shopify.com/s/files/1/0432/6254/1982/files/54218068049.pdf
    • https://cdn.shopify.com/s/files/1/0431/8131/0114/files/bodazi.pdf
    • https://cdn.shopify.com/s/files/1/0427/4274/3207/files/jurozegiwikorabofukofoza.pdf
    • https://cdn.shopify.com/s/files/1/0431/9900/4827/files/wafovuretonofuluzisaw.pdf
    • https://static.usrfiles.com/ugd/7cefa9_4b603ee2ca4946f8b8ec76c090be6653.pdf
    • https://static.usrfiles.com/ugd/b8c837_d5525ed7b916441298663e2afd7080dd.pdf
    • https://static.usrfiles.com/ugd/0df15e_7f640332c59f45ab91cbf60d2f809008.pdf
    • https://static.usrfiles.com/ugd/a4d998_2eb7cb0c03334a0990836cd54524f303.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_off00007e8f.bin
903569a086d9574de3bebbea60abac4467d2efbe9c74151957bc45743ba73ba5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E8F 5384 bytes
font_01_sfnt_off000090b6.bin
dd7c8a003551493e7e63db81fd2628c7054717a9a7cfce4a5426a2d3a8272207		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90B6 9956 bytes

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