Malicious PDF — malware analysis report

Static analysis result for SHA-256 edf6fb33c519ae26…

MALICIOUS

PDF

71.6 KB Created: 2020-08-15 00:45:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 789f88ac6fb966d7395167094cf8e0a3 SHA-1: 2f9799da217a294badb86498ec492800fc91b669 SHA-256: edf6fb33c519ae269a557551b05331420ae66df63b5ded849954cc5080799834
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=annamacharya+tamil+songs+free'. This URL is presented within the document body, suggesting a social engineering lure to trick users into visiting a malicious site under the guise of free song downloads. The PDF also exhibits characteristics of a link farm, with numerous embedded links, further supporting the malicious intent.

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.ru/pify?keyword=annamacharya+tamil+songs+free
    • http://files.imagereplicas.com/uploads/1/3/1/4/131453998/pinonowita.pdf
    • http://files.precisiontargetpistolgrips.com/uploads/1/3/0/7/130739664/rinide-lixatewe.pdf
    • http://desam.snowflakeshuffle.com/uploads/1/3/2/3/132302868/aac43.pdf
    • https://cdn.shopify.com/s/files/1/0431/2589/9421/files/68306031043.pdf
    • https://cdn.shopify.com/s/files/1/0440/6099/9830/files/roroxebupajusikopuzij.pdf
    • https://cdn.shopify.com/s/files/1/0434/7668/0869/files/41720352625.pdf
    • https://cdn.shopify.com/s/files/1/0432/1542/1600/files/18230385637.pdf
    • https://cdn.shopify.com/s/files/1/0434/4610/8312/files/simple_monthly_budget_worksheet_for_young_adults.pdf
    • https://cdn.shopify.com/s/files/1/0431/5417/8216/files/tetorik.pdf
    • https://cdn.shopify.com/s/files/1/0427/6033/9623/files/71724901401.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/39532431305.pdf
    • https://cdn.shopify.com/s/files/1/0431/3815/4653/files/32684803482.pdf
    • https://cdn.shopify.com/s/files/1/0428/8380/9439/files/mulonezunakos.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_off0000d3d0.bin
034d1954ff1ede41d2a4b4bb40046cfabeaa7fb62b98cea7b03333b84749e11b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD3D0 5388 bytes
font_01_sfnt_off0000e5f2.bin
32d17f5d67e6e57f1783ebedb6c86a79b203ab7f3357f3d5630c408203aa076a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE5F2 14124 bytes

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