Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b9e53681ead8578…

MALICIOUS

PDF

48.8 KB Created: 2020-08-14 11:31:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 434759f9b7e76f19accf2d5be4e55086 SHA-1: e033d1b58b3181def4c290de6e7ceb5fe3c68e6b SHA-256: 3b9e53681ead8578f8c270a36cca73f1753de8a87abe4acc2f65fbae79e0a78d
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at `ttraff.ru`. The document body, though heavily obfuscated, contains the same URL, suggesting a lure to disguise the malicious intent. The primary attack pattern involves redirecting the user to malicious infrastructure, likely for further exploitation or malware delivery.

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/wb?keyword=training%20and%20development%20notes%20for%20mba%20pdf
    • http://files.tommainwebsite.org/uploads/1/3/1/4/131483955/rojivikilitavo_fuledekumago_ramorigaxeliga.pdf
    • http://pomido.christiephotography.net/uploads/1/3/2/6/132683071/8a253.pdf
    • http://files.lolitamdomingue.com/uploads/1/3/1/4/131437806/gagoviwopuniv_momedugomup_ninalene.pdf
    • http://fasoz.aiatorrance.com/uploads/1/3/1/8/131871674/virewisef-dasatorerapor-nubela-tenudapap.pdf
    • https://cdn.shopify.com/s/files/1/0431/1806/7866/files/18980890254.pdf
    • https://cdn.shopify.com/s/files/1/0430/4902/5690/files/63844216752.pdf
    • https://cdn.shopify.com/s/files/1/0433/4842/6910/files/68747260573.pdf
    • https://cdn.shopify.com/s/files/1/0433/1945/9998/files/95643405690.pdf
    • https://cdn.shopify.com/s/files/1/0432/2246/6720/files/69243756065.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3106/files/sofiwidaretazimiw.pdf
    • https://cdn.shopify.com/s/files/1/0429/3178/1791/files/handbook_for_stoelting_s_anesthesia_and_co_existing_disease.pdf
    • https://cdn.shopify.com/s/files/1/0431/4746/0768/files/biwedapunofasuvezijewem.pdf
    • https://cdn.shopify.com/s/files/1/0434/4024/2840/files/61151643948.pdf
    • https://cdn.shopify.com/s/files/1/0431/9651/4461/files/18342428297.pdf
    • https://cdn.shopify.com/s/files/1/0437/5343/9383/files/jizeruxibarexogin.pdf
    • https://cdn.shopify.com/s/files/1/0435/6649/7960/files/78181750238.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f58.bin
0eac1552a6a0cc8d6d43e14f5c157d052ff2bf21460314f67a2c213e0a454e63
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F58 6744 bytes
font_01_sfnt_off0000703f.bin
5267d675c8f4d11de2f789f7f370751df0838bc5c61e846a7a7e7b5158eebb3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x703F 5296 bytes
font_02_sfnt_off00008221.bin
07902f3e4a3538c8a30a8222622442ea9cda9e5c4bb0bcce8567c95fb244d504
pdf-font-stream PDF embedded font (sfnt) at offset 0x8221 11720 bytes
font_03_sfnt_off0000a745.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xA745 4324 bytes