Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdf548a9f405a9e5…

MALICIOUS

PDF

44.3 KB Created: 2020-09-03 03:53:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a628568a31633c79d2c3e087ef633068 SHA-1: 82387550b61ed8b5882f248841bffe0d24275932 SHA-256: cdf548a9f405a9e5a0b21db70c3109bf6f28be0fa564755eff0852a8277bdc0f
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.me'. This URL is presented in the context of a fake 'Adobe Flash Player' update, a common lure. The document also contains a link farm heuristic, with multiple links hosted on Shopify, one of which is also identified as a potential download. The presence of a visual download button further supports the social engineering aspect of this attack.

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.me/wix?keyword=adobe+flash+player+activex+32+bit
    • https://cdn.shopify.com/s/files/1/0434/7641/8720/files/meselowadamajuk.pdf
    • https://cdn.shopify.com/s/files/1/0429/4865/7311/files/8498229961.pdf
    • https://cdn.shopify.com/s/files/1/0469/9793/0136/files/eternal_magic_gunslinger_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43377474007.pdf
    • https://cdn.shopify.com/s/files/1/0436/1800/9251/files/lesepojugogax.pdf
    • https://cdn.shopify.com/s/files/1/0438/7491/0376/files/rusijedomijepogaxas.pdf
    • https://cdn.shopify.com/s/files/1/0436/1800/9250/files/detogumapeto.pdf
    • https://cdn.shopify.com/s/files/1/0437/8545/3730/files/46488207489.pdf
    • https://cdn.shopify.com/s/files/1/0433/1310/2998/files/11435889085.pdf
    • https://cdn.shopify.com/s/files/1/0462/1418/5114/files/agni_natchathiram_background_music.pdf
    • https://cdn.shopify.com/s/files/1/0432/3953/8851/files/creative_website_templates_themeforest.pdf
    • https://cdn.shopify.com/s/files/1/0431/1112/1057/files/mudebop.pdf
    • https://cdn.shopify.com/s/files/1/0428/7063/6710/files/bugadakemato.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_off00006d18.bin
cc2b2b661a153b9068c91e986fa4fc6e222767817ee9f7a769c39b347e81cb25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D18 5896 bytes
font_01_sfnt_off00008135.bin
50f7f2bc0eb03fc004e97140134033e26a0f49a67b3e763273bc32a941f7f8e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8135 10388 bytes

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