Malicious PDF — malware analysis report

Static analysis result for SHA-256 24659ed486034d5c…

MALICIOUS

PDF

47.1 KB Created: 2020-08-08 00:07:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b9182ccf7e1416c45469263aa7a20047 SHA-1: 818d723f55eece5edf6b8145500b0ab1da5713e7 SHA-256: 24659ed486034d5c2288507ccca1862b863c0c45cf216c0a35e5e848c39e0213
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is part of a link farm strategy, with many embedded links to Shopify-hosted PDFs, likely to improve search engine ranking and distribute the malicious payload. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing its role as a lure. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=gujarati+matrimonial+biodata+format+pdf
    • http://files.chronevo.com/uploads/1/3/1/0/131070051/81e7cb84a208.pdf
    • http://files.azdoodleranch.com/uploads/1/3/1/4/131437362/e26111c9bbd.pdf
    • http://files.theoldeschoolhouse.com/uploads/1/3/1/4/131406082/delunuramad-mivujigerune-vepamelepebetix.pdf
    • http://files.oace.co/uploads/1/3/1/3/131381781/parotakime.pdf
    • http://mopat.bonellipark.org/uploads/1/3/0/7/130776445/luwojujezewijiv_deral_veborivokij.pdf
    • https://cdn.shopify.com/s/files/1/0429/9502/4033/files/78523988530.pdf
    • https://cdn.shopify.com/s/files/1/0437/7850/6904/files/fufob.pdf
    • https://cdn.shopify.com/s/files/1/0433/9718/5701/files/82175443677.pdf
    • https://cdn.shopify.com/s/files/1/0431/6410/6908/files/kidavuvemijabegu.pdf
    • https://cdn.shopify.com/s/files/1/0438/8293/8520/files/master_of_money_sunday_adelaja.pdf
    • https://cdn.shopify.com/s/files/1/0428/4550/3655/files/guitar_power_cord_chart.pdf
    • https://cdn.shopify.com/s/files/1/0433/9728/3992/files/989069461.pdf
    • https://cdn.shopify.com/s/files/1/0438/2192/4514/files/administracion_de_recursos_humanos_dessler.pdf
    • https://cdn.shopify.com/s/files/1/0436/7453/4041/files/dieta_vegetariana_balanceada.pdf
    • https://cdn.shopify.com/s/files/1/0428/3082/3583/files/vepejeliredowivalojaxa.pdf
    • https://cdn.shopify.com/s/files/1/0435/6145/1681/files/95320984110.pdf
    • https://cdn.shopify.com/s/files/1/0445/7860/3172/files/aviculture_traditionnelle.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/negopolikutowuz.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_off00006c80.bin
7a88636318a04fba4c0f8b00ad9a12e7f355ce9e1171266b1917ca8b35e88397		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C80 5020 bytes
font_01_sfnt_off00007d6f.bin
2459f5d68addeabae67081717568cdf78a10fdf1bdcd3a5a353122a16e4388d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D6F 10352 bytes
font_02_sfnt_off0000a0ca.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA0CA 4324 bytes

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