Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3cfd360a373b0f8…

MALICIOUS

PDF

37.6 KB Created: 2020-08-06 04:39:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 55e7f8785980af1019ab84e042c3ccc4 SHA-1: a85d0634e41a03dbeb4cfcd54203902524020faf SHA-256: d3cfd360a373b0f8821a58ebe36d5c156243e1f764c9f862c97e18269d87882e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body also contains this URL, suggesting the primary intent is to trick the user into clicking it. The link likely leads to a phishing or malware distribution site. 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.cc/pify?keyword=northstar+building+skills+for+the+toefl+ibt+high+intermediate+pdf
    • http://files.desertratfeatures.com/uploads/1/3/0/8/130874011/juzubikarufodaz.pdf
    • http://files.passportforpaws.org/uploads/1/3/1/3/131384113/galajubilotezu.pdf
    • http://suset.charitylutheran.org/uploads/1/3/0/7/130776445/c52d255a451a04.pdf
    • http://files.excellentwoodturning.com/uploads/1/3/0/8/130814219/94fd1408a2d1d4.pdf
    • http://files.northhoffmanvet.com/uploads/1/3/1/4/131454034/2224405.pdf
    • https://cdn.shopify.com/s/files/1/0437/8496/2199/files/catalogue_ikea_1993.pdf
    • https://cdn.shopify.com/s/files/1/0431/1806/7876/files/27710378637.pdf
    • https://cdn.shopify.com/s/files/1/0439/5152/1947/files/50930660612.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dotalufakelani.pdf
    • https://cdn.shopify.com/s/files/1/0434/0921/1549/files/convert_psd_to_png.pdf
    • https://cdn.shopify.com/s/files/1/0430/5725/0455/files/nowatikaravowunumil.pdf
    • https://cdn.shopify.com/s/files/1/0431/2216/3866/files/fitgirlsguide_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/7624/7967/files/44870261606.pdf
    • https://cdn.shopify.com/s/files/1/0432/2754/5755/files/95959992613.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_off00004ff3.bin
5266ec5fa1db5a9648f3b31c6c28b5faae205ff6969dacb6083875d26784a4c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FF3 5628 bytes
font_01_sfnt_off000062ef.bin
147cd1db100eeff0a5bab523464f9b7b98443dd5ca1f23768ef103beb11fb703		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62EF 10652 bytes

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