Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7c889435d5f0667…

MALICIOUS

PDF

32.0 KB Created: 2020-08-15 00:10:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a685b71e7bac762039d0837e1b992cb6 SHA-1: b57418bd10a350b79db1e0ec0edbff14a4cb6c8b SHA-256: f7c889435d5f066768315495d8db32d7cd7f2e8ec0184ac4100f7e04b61e8545
150 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to a redirector service. The primary malicious URL identified is https://ttraff.com/pify?keyword=adarsh+shinde+song++video, which is likely used to direct users to further malicious content. The document body, though heavily obfuscated, contains references to this URL and other Shopify-hosted PDFs, suggesting a link farm or redirection tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=adarsh+shinde+song++video
    • http://files.villadoradaapartments.com/uploads/1/3/0/8/130873840/8633998.pdf
    • http://dexokokop.southforkwatershed.org/uploads/1/3/0/8/130874050/pelenowanojesavap.pdf
    • http://karanukiw.cghwood.com/uploads/1/3/2/6/132682883/5210432.pdf
    • https://cdn.shopify.com/s/files/1/0431/2412/9946/files/38074267110.pdf
    • https://cdn.shopify.com/s/files/1/0430/3175/6957/files/2656874175.pdf
    • https://cdn.shopify.com/s/files/1/0429/9220/5978/files/blurry_images_indesign.pdf
    • https://cdn.shopify.com/s/files/1/0431/6440/1818/files/how_to_speak_english_fluently_books_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/39646295774.pdf
    • https://cdn.shopify.com/s/files/1/0428/9508/1635/files/dafoxanexikavalajoji.pdf
    • https://cdn.shopify.com/s/files/1/0437/5396/3678/files/boris_vian_el_lobo_hombre.pdf
    • https://cdn.shopify.com/s/files/1/0437/3417/1800/files/93399935274.pdf
    • https://cdn.shopify.com/s/files/1/0435/1482/2811/files/30787674177.pdf
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/partnership_fundamentals.pdf
    • https://cdn.shopify.com/s/files/1/0428/7142/3135/files/teste_de_ansiedade_e_depresso.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_off0000427b.bin
91b5f173c7a0166123990c652d9ec5b1f37f2c78a46795ee889056f924c61f4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x427B 5104 bytes
font_01_sfnt_off000053d7.bin
0ad22d922893b1388c6a5aae0d8071d577289af4ef795b883ab594875dbb3404		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53D7 9328 bytes

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