Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2ca671880f5c186…

MALICIOUS

PDF

40.9 KB Created: 2020-08-30 01:53:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a928df55e95b46d05252da89d85c280 SHA-1: b66d869ccd56c440723ad88a97d0ac9b1cae28d3 SHA-256: d2ca671880f5c18632a7231e0be850ae8cd0edad064b9ffac7599a477834c7e1
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic identifying it as a PDF link farm. One of the primary URLs, 'https://ttraff.com/wix?keyword=how+to+brew+espresso', is flagged as malicious. The document body contains garbled text and a URL, suggesting it is not intended for legitimate user consumption but rather for link distribution or redirection.

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/wix?keyword=how+to+brew+espresso
    • https://cdn.shopify.com/s/files/1/0434/3791/6312/files/canulas_orofaringeas_y_nasofaringeas.pdf
    • https://cdn.shopify.com/s/files/1/0431/4519/9784/files/german_shepherd_dog_pictures_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/7939/1646/files/carnatic_violin_notes.pdf
    • https://cdn.shopify.com/s/files/1/0434/8854/2872/files/69063083542.pdf
    • https://cdn.shopify.com/s/files/1/0431/5915/8940/files/dilan_novel.pdf
    • https://cdn.shopify.com/s/files/1/0463/8162/9595/files/vubepewepa.pdf
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/nogogufizegigadipizija.pdf
    • https://cdn.shopify.com/s/files/1/0434/8549/5453/files/50880416867.pdf
    • https://cdn.shopify.com/s/files/1/0431/7318/3643/files/48160892126.pdf
    • https://cdn.shopify.com/s/files/1/0441/3066/4600/files/12271945497.pdf
    • https://cdn.shopify.com/s/files/1/0435/0096/1947/files/nikiwamep.pdf
    • https://cdn.shopify.com/s/files/1/0432/9262/2998/files/cours_d_anglais_avec_traduction_en_franais.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/40475115474.pdf
    • https://cdn.shopify.com/s/files/1/0435/3831/7464/files/desedukowapukat.pdf
    • https://cdn.shopify.com/s/files/1/0433/4708/3429/files/rukiwesi.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_off0000638d.bin
967b54a4728259ab86a73a4c64dd5f21b5c51bec18d38e4420e26c201c7fea5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x638D 4764 bytes
font_01_sfnt_off000073da.bin
57b209a7723f4baae7abd7077fe3c3d3ef22dee2201010930df535085454c01c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73DA 10324 bytes

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