Malicious PDF — malware analysis report

Static analysis result for SHA-256 48115b8c7ee6a3da…

MALICIOUS

PDF

41.4 KB Created: 2020-08-14 15:19:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d7ea82657e3ca4451680f66670fd5bf SHA-1: 277f10e506c58795fc9b5fc40391b961492a8f20 SHA-256: 48115b8c7ee6a3da69f958f3ca50927fde61949e480d7eb9d5f1bbde6515fe51
120 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, including a critical redirector link to 'ttraff.cc' which is associated with malicious activity. The document body, though partially corrupted, contains text related to Acer Android tablets and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of numerous Shopify links, while some are benign, contributes to the SEO link farm characteristic, aiming to improve search engine ranking for malicious content.

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=acer+android+tablet+not+charging
    • http://files.enhanceosteopathy.com.au/uploads/1/3/1/4/131438113/887fe7d2.pdf
    • http://files.littlesharkandco.com/uploads/1/3/0/9/130969185/561f17d4005e0.pdf
    • http://files.guntersvillelionsclub.com/uploads/1/3/2/6/132682883/rotugazuwitetaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5903401900.pdf
    • https://cdn.shopify.com/s/files/1/0448/5742/6081/files/most_lightweight_reader_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xifadek.pdf
    • https://cdn.shopify.com/s/files/1/0432/4222/5832/files/96904764225.pdf
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/70238872234.pdf
    • https://cdn.shopify.com/s/files/1/0430/8110/5562/files/71602624612.pdf
    • https://cdn.shopify.com/s/files/1/0436/5929/6926/files/rooms_of_the_house_worksheets_for_kindergarten.pdf
    • https://cdn.shopify.com/s/files/1/0438/7173/1880/files/solelagogeba.pdf
    • https://cdn.shopify.com/s/files/1/0437/2830/6341/files/acute_myocardial_infarction_pathophysiology.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/jamezob.pdf
    • https://cdn.shopify.com/s/files/1/0433/1651/0873/files/beauty_and_the_beast.pdf
    • https://cdn.shopify.com/s/files/1/0440/9245/7112/files/discord_chat_secrets.pdf
    • https://cdn.shopify.com/s/files/1/0432/0677/0843/files/3344959722.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_off0000643d.bin
61ca99ee1c6a3fec41ae98ba728498b954ad2e2b6543796d3ea153775fa06a63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x643D 5152 bytes
font_01_sfnt_off000075ac.bin
3839bdfab5abe174215018b36c32d9e7b3708276e4454ba7d5573eb7dd52fafc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75AC 10316 bytes

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