Malicious PDF — malware analysis report

Static analysis result for SHA-256 dda44f99878e271f…

MALICIOUS

PDF

44.4 KB Created: 2020-08-20 00:06:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57778d1248b1aaba225202f71759d0ab SHA-1: 2d3e39ffc1b486fa7682840093b8cd23987f1bce SHA-256: dda44f99878e271f910f9ad282475ceaecaca5b42a77d488fe32e807c53f2474
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with a critical heuristic firing indicating a link farm pointing to a known malicious redirector. The primary malicious URL identified is https://ttraff.ru/pify?keyword=landscape+portrait+android. While many other links point to Shopify, the presence of the redirector suggests an attempt to obscure the ultimate malicious destination, likely for phishing or malware distribution.

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=landscape+portrait+android
    • http://kuwulexo.timgriffiths3d.com/uploads/1/3/0/8/130814328/1782794.pdf
    • http://files.stamfordpresbyterian.com/uploads/1/3/1/4/131438056/3653781.pdf
    • http://mofosopov.europeanburmesebc.org/uploads/1/3/1/3/131383900/3131066.pdf
    • https://cdn.shopify.com/s/files/1/0435/2344/0804/files/36350805747.pdf
    • https://cdn.shopify.com/s/files/1/0429/0645/2131/files/35686507139.pdf
    • https://cdn.shopify.com/s/files/1/0430/6229/6725/files/lunchroom_fight_suspension_report_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0435/7256/0033/files/71744938884.pdf
    • https://cdn.shopify.com/s/files/1/0434/4011/1782/files/melavi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6753/9605/files/algebra_1_benchmark_test_4_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/2296/7207/files/matthew_ashimolowo_books_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/0714/7166/files/fukoma.pdf
    • https://cdn.shopify.com/s/files/1/0452/6505/9997/files/classification_of_agronomic_crops.pdf
    • https://cdn.shopify.com/s/files/1/0437/9633/2705/files/livro_abandono_afetivo_indenizao_por_dano_moral.pdf
    • https://cdn.shopify.com/s/files/1/0429/1330/0647/files/24647349506.pdf
    • https://cdn.shopify.com/s/files/1/0428/7676/4327/files/journey_don_t_stop_believin_sheet_music.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_off00006f50.bin
e29bef795fdb2aa0d1e096e3979748a278ee6d23081b281bdbec5ffabb856b25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F50 4976 bytes
font_01_sfnt_off00008048.bin
d349948060cb77a2b7a0444bfec065232def56165f4e0e53dc7c64bd82225f14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8048 10668 bytes

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