Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c205bdc68634394…

MALICIOUS

PDF

41.6 KB Created: 2020-08-04 23:38:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b275f4361e7b9cedf1cf3e9e7071f94 SHA-1: 709513c6e8110c30da8983e926f2f457b2a34f35 SHA-256: 1c205bdc68634394901a3f1121af46257c6a149dc3219821a093791096bbbc6e
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, pointing to 'https://ttraff.com/pify?keyword=applied+linguistics+books+pdf'. This indicates a phishing or scam attempt. The document also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify-hosted PDFs, suggesting an attempt to manipulate search engine results or distribute content. No scripts were extracted from this sample.

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.com/pify?keyword=applied+linguistics+books+pdf
    • http://files.positively-mindful.com/uploads/1/3/0/8/130874016/kirukozufugo-sarufobi-pawedetusamaxu-niluwuruporet.pdf
    • http://files.grandeprairierugby.com/uploads/1/3/1/3/131397973/butififizimoz.pdf
    • http://files.firetobekindled.org/uploads/1/3/1/4/131453256/zumemilizelexotozo.pdf
    • http://files.nick-young.net/uploads/1/3/1/6/131606373/7057666.pdf
    • https://cdn.shopify.com/s/files/1/0430/1966/5561/files/juzabos.pdf
    • https://cdn.shopify.com/s/files/1/0433/8561/8583/files/77231738039.pdf
    • https://cdn.shopify.com/s/files/1/0440/8567/4149/files/13257714444.pdf
    • https://cdn.shopify.com/s/files/1/0427/7154/6279/files/13790687242.pdf
    • https://cdn.shopify.com/s/files/1/0430/7727/1716/files/golang_load_balancer.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/koxumugude.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/doxufuvezemog.pdf
    • https://cdn.shopify.com/s/files/1/0434/9739/0244/files/wigarusiriz.pdf
    • https://cdn.shopify.com/s/files/1/0434/3414/7989/files/82101060001.pdf
    • https://cdn.shopify.com/s/files/1/0432/4635/4594/files/77393045344.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_off00004cd6.bin
ecf8154b17810d63ca6c27bfff8d7cf722ed3b1d4a461237ba44349545dcc427		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4CD6 5092 bytes
font_01_sfnt_off00005e3b.bin
226b67b387ca3b0b9864a13832dc60fd8e0345b59bbabf39f75b58e87ed1626c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E3B 13768 bytes
font_02_sfnt_off000089f7.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89F7 4324 bytes

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