Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b45276695f57beb…

MALICIOUS

PDF

37.3 KB Created: 2020-09-14 00:03:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5bdab037c5fae9803b59200685f8971d SHA-1: 3958850173db1fb12914cdea328a133f615983a4 SHA-256: 7b45276695f57beb59ef79ca230f4ec9b236eac6b5a6811927f0825060fb22de
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though partially corrupted, contains text related to 'Aasl standards for school librarians' and a URL that appears to be part of a SEO link farm strategy. The primary malicious URL identified is https://ttraff.me/wix?keyword=aasl+standards+for+school+librarians, which is likely used to redirect users to a phishing or malware-hosting site.

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.me/wix?keyword=aasl+standards+for+school+librarians
    • http://files.pgeastteachandlearn.com/uploads/1/3/0/7/130738714/d7d1bd294f8.pdf
    • http://files.lakelifefashions.com/uploads/1/3/1/6/131606875/231eb3537adda.pdf
    • http://files.ninaquilts.com/uploads/1/3/1/1/131164456/e5d0b.pdf
    • http://files.shutterpandemonium.com/uploads/1/3/2/6/132695301/xawulerenorepoj_zefufimesi_gigimi_xudurafalu.pdf
    • https://cdn.shopify.com/s/files/1/0437/4750/8385/files/23540854204.pdf
    • https://cdn.shopify.com/s/files/1/0427/4972/2790/files/android_mobile_root_software_for_pc.pdf
    • https://cdn.shopify.com/s/files/1/0433/1972/2152/files/22794591867.pdf
    • https://cdn.shopify.com/s/files/1/0433/5910/9279/files/69366446188.pdf
    • https://cdn.shopify.com/s/files/1/0448/0948/6498/files/solving_exponential_and_logarithms_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jobevemavesofidubuxiwi.pdf
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/89634066202.pdf
    • https://cdn.shopify.com/s/files/1/0434/2821/6983/files/9318207832.pdf
    • https://cdn.shopify.com/s/files/1/0433/5386/6408/files/kuzufexatuwaguwed.pdf
    • https://cdn.shopify.com/s/files/1/0429/9328/7321/files/28708936530.pdf
    • https://cdn.shopify.com/s/files/1/0440/3717/7494/files/android_watch_with_sim_and_camera.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_off00005527.bin
bf04b5ac541675dd49daf5f183649783cc4c2797a214427ee3e56b4814eef61a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5527 5236 bytes
font_01_sfnt_off000066ef.bin
61e3ea6e8eca675c0d0d0f5b1a078e2447b125ba19bcd6fd49532859a3dce054		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66EF 9832 bytes

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