Malicious PDF — malware analysis report

Static analysis result for SHA-256 904e9a0e2d1976e3…

MALICIOUS

PDF

42.8 KB Created: 2020-08-20 03:58:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54a093623be9af5575b78747830b790b SHA-1: e5b3f742babc315d92ef93e866fa166988e0f2c7 SHA-256: 904e9a0e2d1976e3b7b21761e409d0ba15c06388e9824f3eb2d89f6f5b2c43eb
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of embedded links, a technique commonly used for SEO link farms and redirecting users to malicious sites. One of the primary links points to a known malicious redirector. The document body contains obfuscated text and URLs, further supporting the malicious intent.

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=dushman+old+movie
    • http://files.annetrauben.com/uploads/1/3/1/4/131408432/xiderapipitas-gogepaxuj.pdf
    • http://files.ironhorselasvegas.com/uploads/1/3/1/4/131407042/lekek_judodinogarutil.pdf
    • http://files.eastpauldingyouthfootball.com/uploads/1/3/1/3/131398286/5139327.pdf
    • http://dokud.apianalosangeles.com/uploads/1/3/1/4/131437736/8398962.pdf
    • http://files.christianlifeupc.com/uploads/1/3/0/7/130776644/rilijuzupasukijoz.pdf
    • https://cdn.shopify.com/s/files/1/0430/8641/3985/files/ruwepovosofesebisaxigim.pdf
    • https://cdn.shopify.com/s/files/1/0427/7121/8588/files/58937975299.pdf
    • https://cdn.shopify.com/s/files/1/0436/1990/9794/files/zarotoguwave.pdf
    • https://cdn.shopify.com/s/files/1/0430/9896/4117/files/58393337128.pdf
    • https://cdn.shopify.com/s/files/1/0431/8186/7176/files/sefodaxafagoguzupixaged.pdf
    • https://cdn.shopify.com/s/files/1/0429/6248/5407/files/kabax.pdf
    • https://cdn.shopify.com/s/files/1/0445/3544/7711/files/tratamiento_cancer_de_mama_triple_negativo.pdf
    • https://cdn.shopify.com/s/files/1/0440/4533/6726/files/48364343643.pdf
    • https://cdn.shopify.com/s/files/1/0428/4760/0807/files/geometrical_optics_in_engineering_physics.pdf
    • https://cdn.shopify.com/s/files/1/0434/3070/7356/files/46750722407.pdf
    • https://cdn.shopify.com/s/files/1/0436/9825/8088/files/assembly_language_programming_8051.pdf
    • https://cdn.shopify.com/s/files/1/0437/5032/6426/files/football_manager_2018_android_review.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_off00006b2a.bin
1f3fe6758c505fa218aebb18111e867f8343304a698282a6ce2e83628671b5b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B2A 5028 bytes
font_01_sfnt_off00007c2c.bin
da53fc0523c9b937afe56704a672eaa64ad65551331dca7823e088b1c55ad768		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C2C 10076 bytes

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