Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4d1fe69eda840b1…

MALICIOUS

PDF

48.0 KB Created: 2020-08-22 07:08:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ebc699635d54a94612a6a3457282194 SHA-1: a2d2e4813d4974da40239269049ae5f76403baaa SHA-256: a4d1fe69eda840b188701ed61566f2ed05d3c6e2592db805aa517387c010dbfc
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains numerous embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK indicating a link to ttraff.com. The document body, though heavily obfuscated, contains the string 'https://ttraff.com/pify?keyword=sqlite++for+windows+8', suggesting a lure to a malicious site disguised as a search result. The presence of a PDF link farm further supports a malicious intent to redirect users to potentially harmful 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.com/pify?keyword=sqlite++for+windows+8
    • http://fufut.serangdentalassociates.com/uploads/1/3/2/8/132814930/ea5ab2c86c05c.pdf
    • https://cdn.shopify.com/s/files/1/0434/3146/1016/files/8732741463.pdf
    • https://cdn.shopify.com/s/files/1/0433/7755/7660/files/zuvirowuxubaxo.pdf
    • https://cdn.shopify.com/s/files/1/0428/2833/3219/files/53999064113.pdf
    • https://cdn.shopify.com/s/files/1/0441/2211/2152/files/52435343206.pdf
    • https://cdn.shopify.com/s/files/1/0451/1947/1781/files/business_studies_grade_12_platinum_textbook_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/5102/3510/files/blender_materials_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/79800300633.pdf
    • https://cdn.shopify.com/s/files/1/0434/8408/6424/files/kivalid.pdf
    • https://cdn.shopify.com/s/files/1/0431/8511/1203/files/86278945978.pdf
    • https://cdn.shopify.com/s/files/1/0428/5038/6079/files/73087041289.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tedix.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tuwupijisunuxavupo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8803/5486/files/ridobaled.pdf
    • https://cdn.shopify.com/s/files/1/0430/9496/6429/files/the_eft_manual.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_off000064e6.bin
0aafb88a3a38ba918abd158acb069a970d0d81a28540c0a10400ec557bb8e2c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64E6 5208 bytes
font_01_sfnt_off000076ba.bin
0ea370812afd685eae0239074f599dfe137d98633b1803d23d9a8020faec2b0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76BA 11188 bytes
font_02_sfnt_off00009cd1.bin
9cb0650af5bdb2e8593988a361a40fe1030b61ea25d8fce7fab67310e0b1f9a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CD1 16352 bytes

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