Malicious PDF — malware analysis report

Static analysis result for SHA-256 317fbd815c349336…

MALICIOUS

PDF

82.0 KB Created: 2020-08-08 11:48:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b1a011688b64846767553bf2d88c7b0f SHA-1: f76cd0ab63fb3f0852fe3e76ee980ebf47272e2b SHA-256: 317fbd815c3493368ef29d80b69221052aba349281542bc93d7136ae61c8cf5f
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a free download. The heuristic firings indicate the PDF links to known malicious infrastructure and hosts a large number of external PDF links, suggesting a link farm for SEO manipulation or malware distribution. The primary malicious URL identified is https://ttraff.cc/pify?keyword=psychology+malayalam+pdf+free+download, which likely serves as a gateway to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.cc/pify?keyword=psychology+malayalam+pdf+free+download
    • http://files.coalitionforsafeschoolsnyc.org/uploads/1/3/0/9/130969206/jaxakefunubiwixex.pdf
    • http://files.thecuriouscatgiftshop.com/uploads/1/3/2/6/132681596/puwakir.pdf
    • http://nivafan.littleangelscharity.com/uploads/1/3/1/0/131069934/xezezaw_gadixanejomo_vulobol_vevoxetago.pdf
    • https://cdn.shopify.com/s/files/1/0437/6988/8920/files/38660937220.pdf
    • https://cdn.shopify.com/s/files/1/0429/2047/6828/files/46255211280.pdf
    • https://cdn.shopify.com/s/files/1/0437/6195/9070/files/2_digit_by_2_digit_multiplication_worksheets_free.pdf
    • https://cdn.shopify.com/s/files/1/0427/8249/0791/files/second_shift_arlie_hochschild.pdf
    • https://cdn.shopify.com/s/files/1/0431/0079/9140/files/wizefaxixeriloditel.pdf
    • https://cdn.shopify.com/s/files/1/0428/0595/2671/files/zisaxuj.pdf
    • https://cdn.shopify.com/s/files/1/0435/8012/9441/files/91221132854.pdf
    • https://cdn.shopify.com/s/files/1/0433/9400/7191/files/katuzadiraw.pdf
    • https://cdn.shopify.com/s/files/1/0445/4160/8100/files/n1_mathematics_textbook_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/7065/1542/files/applied_mathematics_113_solved_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0428/8803/6505/files/numbers_1_100.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000a606.bin
176fb407e9417c96d2e4e7eea372a336c9ddc97dafebcd624e27dc6b832641c6		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xA606 20996 bytes
stream_006_off0001093c.bin
924c5412f114c3ab6a3815925b7a3f7e77c6eb1233066473f6ec388eef6b14c1		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1093C 20768 bytes
font_00_sfnt_off000093b8.bin
88b4b18c8f7bbe46d4194d8e8bba040b0d295aed1770c178539a62beec87eb3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93B8 5424 bytes
font_02_sfnt_off0000e518.bin
8f359522df53fd6ebb9ed71eb16963c5bd020c9e82f9fb4e45f16a01d2480a9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE518 10524 bytes
font_04_sfnt_off00012bf8.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12BF8 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.