Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fb5e3edaaa19040…

MALICIOUS

PDF

42.0 KB Created: 2020-08-25 16:19:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78ff38433385010f0b68d1027f5fad77 SHA-1: 24dccc385496ffbf28648114b0f695316055ecca SHA-256: 7fb5e3edaaa190408e5c63ef82ba6c6e84413d33809df3de1bf2372106dff213
120 Risk Score

Malware Insights

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

The PDF was flagged for containing a malicious redirector link and a large number of embedded links, suggesting a link farm or SEO manipulation tactic. The primary malicious URL identified is ttraff.ru, which is known to host malicious redirectors. The document body contains text related to college applications, likely a lure to disguise the malicious intent. No scripts were extracted from this sample.

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=high+school+resume+for+college+application+template
    • http://files.rokforcefusion.com/uploads/1/3/0/8/130873914/vonajataw.pdf
    • http://gafudegi.modernretailcollective.store/uploads/1/3/1/3/131381204/6838581.pdf
    • http://files.orchardviewlincolns.com/uploads/1/3/0/7/130775732/553e151.pdf
    • https://cdn.shopify.com/s/files/1/0434/4394/5622/files/26431203379.pdf
    • https://cdn.shopify.com/s/files/1/0428/9898/1030/files/nsfas_application_form_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/8942/0695/files/edible_wild_plants_book.pdf
    • https://cdn.shopify.com/s/files/1/0437/5799/4138/files/maxine_medina_answer.pdf
    • https://cdn.shopify.com/s/files/1/0428/6195/3191/files/nutepuzurexagafexo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7839/3749/files/skf_flange_bearing_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0430/5407/1957/files/5916004397.pdf
    • https://cdn.shopify.com/s/files/1/0431/7957/3414/files/90212639227.pdf
    • https://cdn.shopify.com/s/files/1/0432/3885/0724/files/zagudotawalu.pdf
    • https://cdn.shopify.com/s/files/1/0430/2602/2554/files/biology_textbook_pearson.pdf
    • https://cdn.shopify.com/s/files/1/0434/8110/4541/files/11656744411.pdf
    • https://cdn.shopify.com/s/files/1/0436/2820/0096/files/albert_einstein_inventions.pdf
    • https://cdn.shopify.com/s/files/1/0427/9071/5548/files/63422086408.pdf
    • https://cdn.shopify.com/s/files/1/0429/9204/2137/files/21517150408.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_off000066b0.bin
6c26905ee2252db7d7f76f5c5cdaee0597dc79b79d282a476ea481d8177e448e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66B0 5392 bytes
font_01_sfnt_off000078df.bin
3217063e0b7a230a11dbd69ef13df2f15eb8ce9edcdcce6a49fb138f5463c338		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78DF 9892 bytes

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