Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa3fa5d55e4c3924…

MALICIOUS

PDF

47.9 KB Created: 2020-10-14 18:53:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 556cbd0f2bb8407d0e7d712a323ca268 SHA-1: 4d4dacc9f247afc533274f39d0151d9e33ed9e4c SHA-256: aa3fa5d55e4c3924096059054b8275e4e75deca795c0ab5398d66334ab946bf1
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to benign content on cdn.shopify.com and strikinglycdn.com. However, one critical link directs to a known malicious redirector infrastructure at 'ttraff.link'. This suggests the document's primary purpose is to redirect users to malicious sites, 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.link/pify?keyword=a+pie+luigi+amara+pdf
    • https://cdn-cms.f-static.net/uploads/4366000/normal_5f8704f2ebe36.pdf
    • https://cdn-cms.f-static.net/uploads/4366031/normal_5f870177ef1e1.pdf
    • https://cdn-cms.f-static.net/uploads/4366031/normal_5f8714024ae3c.pdf
    • https://cdn.shopify.com/s/files/1/0492/3041/3980/files/doraemon_movie_in_hindi.pdf
    • https://cdn.shopify.com/s/files/1/0429/9702/2871/files/15872231803.pdf
    • https://cdn.shopify.com/s/files/1/0495/5596/4056/files/13811000247.pdf
    • https://cdn.shopify.com/s/files/1/0483/5603/2665/files/wolf_online_apk_mod.pdf
    • https://cdn.shopify.com/s/files/1/0432/5651/2667/files/funny_ninja_turtle_names.pdf
    • https://uploads.strikinglycdn.com/files/74cda2af-139b-4fb2-b26e-5603e15c7378/veruxuludakumezitu.pdf
    • https://uploads.strikinglycdn.com/files/2cb46317-91fe-4d0a-af87-997de609ddbd/ronuzegi.pdf
    • https://uploads.strikinglycdn.com/files/f8f37016-eb37-41cb-b08d-00750817b9da/rirawexek.pdf
    • https://uploads.strikinglycdn.com/files/5e33f60f-06f6-4245-b2d1-31493f06a827/27667059841.pdf
    • https://uploads.strikinglycdn.com/files/8624f5a4-9ffe-42a1-afa0-5af680d5996d/8535095660.pdf
    • https://cdn.shopify.com/s/files/1/0500/7107/7027/files/lerujuwozaxonegivabax.pdf
    • https://cdn.shopify.com/s/files/1/0498/8511/8638/files/download_naruto_storm_4_m.u.g.e.n_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0266/8196/6764/files/jelupobawotebegan.pdf
    • https://cdn.shopify.com/s/files/1/0431/6564/6999/files/joxuk.pdf
    • https://cdn.shopify.com/s/files/1/0487/9856/4517/files/99952692171.pdf
    • https://cdn.shopify.com/s/files/1/0434/2421/9288/files/seungri_net_worth.pdf
    • https://cdn.shopify.com/s/files/1/0435/3795/7023/files/luweboma.pdf
    • https://cdn.shopify.com/s/files/1/0430/6203/4589/files/what_is_safeassign.pdf
    • https://cdn.shopify.com/s/files/1/0492/0351/1445/files/march_madness_2020_bracket_schedule.pdf
    • https://cdn.shopify.com/s/files/1/0433/5747/0872/files/wuzasakimisa.pdf
    • https://cdn.shopify.com/s/files/1/0438/9548/8680/files/11089701611.pdf
    • https://cdn.shopify.com/s/files/1/0430/7222/5442/files/teysa_orzhov_scion_avatar.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/
    • https://cdn.shopify.com/s/files/1/0492/0351/144

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007d54.bin
8ed991879a2b9eb095be56e14f8a83d9fcf66c2d8f6276ccf7516a771980d2d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D54 5172 bytes
font_01_sfnt_off00008ed5.bin
1ee3b87c10c95e9ef5da7afc237847fe6ebdc21d79d1f057ea20bb0709c835aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8ED5 10468 bytes

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