Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ddbbf7de10cc016…

MALICIOUS

PDF

38.8 KB Created: 2020-08-12 20:41:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0bbfded18d9f7f329ad66ccd2fd59ea SHA-1: 8746c1ec63fb91776078d815016321f93b3bd177 SHA-256: 2ddbbf7de10cc016c08970f5775bde6dab7db36af573eab674c3f2e1c170ceaf
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify-hosted PDFs, designed to appear as legitimate search results. The primary link, 'https://ttraff.cc/pify?keyword=makkar+ielts+writing+task+1+book+pdf', is identified as a malicious redirector, indicating a phishing or malware distribution attempt. The document body, though heavily corrupted, contains the lure text and the malicious URL, reinforcing the phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=makkar+ielts+writing+task+1+book+pdf
    • http://files.antjedormeyer.com/uploads/1/3/1/3/131383823/kobonizexi.pdf
    • http://files.thaisrussomano.com/uploads/1/3/1/4/131407921/sumulodotovuluwiride.pdf
    • http://polekov.somersetrehab.com/uploads/1/3/0/8/130874038/gadomovenujabep-mujid.pdf
    • https://cdn.shopify.com/s/files/1/0435/6017/3717/files/bijote.pdf
    • https://cdn.shopify.com/s/files/1/0438/0724/4450/files/rapezufek.pdf
    • https://cdn.shopify.com/s/files/1/0429/4295/5687/files/94247432885.pdf
    • https://cdn.shopify.com/s/files/1/0431/8950/2110/files/vonep.pdf
    • https://cdn.shopify.com/s/files/1/0433/4059/5355/files/36613213487.pdf
    • https://cdn.shopify.com/s/files/1/0429/4947/6518/files/23276103988.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8099/files/2007_jeep_commander_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/5533/3027/files/rarepafubufamowaritorusam.pdf
    • https://cdn.shopify.com/s/files/1/0428/0100/4707/files/bavave.pdf
    • https://cdn.shopify.com/s/files/1/0433/3699/0885/files/84740074323.pdf
    • https://cdn.shopify.com/s/files/1/0435/4949/1359/files/30103319921.pdf
    • https://cdn.shopify.com/s/files/1/0433/4852/5208/files/88807059234.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_off0000593d.bin
4c266ca6f7fde4c36d6461753320914b349f2097d93b467654e2d8154bff6be7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x593D 5564 bytes
font_01_sfnt_off00006c50.bin
c042ddfa519313db3c67a1d839d0b5d4ebff28d3663b0ce2f67fddf33edd5af0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C50 9924 bytes

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