Malicious PDF — malware analysis report

Static analysis result for SHA-256 db2d53bce8156562…

MALICIOUS

PDF

46.6 KB Created: 2020-08-11 07:14:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a54cf277766a3f5f073e0fa786d2b4be SHA-1: 42b30b23f4612efe81fd95c1d1f1a0f7cda02766 SHA-256: db2d53bce8156562c87bcfbef7d7540293a8ad8d8d38dced50c6c70f371f1842
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as an 'Aditya birla capital annual report 2020 19 pdf'. This link points to 'ttraff.com', a known malicious redirector. The document also exhibits characteristics of a PDF link farm, with numerous embedded links, many of which are hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. The primary attack vector appears to be social engineering through a deceptive document lure.

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.com/pify?keyword=aditya+birla+capital+annual+report+2020+19+pdf
    • http://files.trvladvantage.com/uploads/1/3/1/3/131398075/nipifusuzab_fobejakopilosif_zoburovixij_waseduperilete.pdf
    • http://files.hollyberrycatering.com/uploads/1/3/0/7/130775341/115519.pdf
    • http://goxofasuw.studio43vxr.com/uploads/1/3/1/6/131606490/136013e744123e.pdf
    • https://cdn.shopify.com/s/files/1/0428/1620/9059/files/fapazaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6982/files/13023819491.pdf
    • https://cdn.shopify.com/s/files/1/0430/5122/1143/files/vizus.pdf
    • https://cdn.shopify.com/s/files/1/0440/1247/0422/files/89865632066.pdf
    • https://cdn.shopify.com/s/files/1/0430/7124/2389/files/17618246099.pdf
    • https://cdn.shopify.com/s/files/1/0439/4693/4430/files/59163698084.pdf
    • https://cdn.shopify.com/s/files/1/0434/2090/9733/files/upsc_mains_answer_sheet_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/8996/0865/files/22549367237.pdf
    • https://cdn.shopify.com/s/files/1/0435/3651/5221/files/wivena.pdf
    • https://cdn.shopify.com/s/files/1/0430/5167/9893/files/40135094990.pdf
    • https://cdn.shopify.com/s/files/1/0437/5147/3303/files/82454732298.pdf
    • https://cdn.shopify.com/s/files/1/0439/2943/6315/files/how_to_reset_adobe_trial.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_off00006e3b.bin
97d7f7b08aafc62057bb5cb42d20234724a77e27d439e40d465124a8759a1c7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E3B 5684 bytes
font_01_sfnt_off000081a2.bin
9eda7a859664f601e33ed2db290c907b82548b290c4249fdd8897bdf34d739fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81A2 13272 bytes

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