Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b179cce7148517b…

MALICIOUS

PDF

51.5 KB Created: 2020-08-10 03:48:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1d12400ee9f4af79b2f3116569a56f7e SHA-1: e94d0eab6cd938cec862841cc845ecb24ca0043a SHA-256: 3b179cce7148517b3fa237e98f45434b81542285fd6059be3d665d91d56e51a4
152 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to a known malicious redirector at `ttraff.com`. The document body, though heavily obfuscated, contains text related to 'Vatican archives secrets' and references the PDF creation tool, suggesting a lure to entice users to click the malicious link. The presence of a large number of external PDF links further indicates a link farm or SEO poisoning attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=vatican+archives+secrets+pdf
    • http://files.nslimgoodies.com/uploads/1/3/1/4/131453498/guteral_sogasifimanovu.pdf
    • http://files.beckydolleycpa.com/uploads/1/3/0/9/130969855/kuferirifo.pdf
    • http://files.aayogaandwellness.com/uploads/1/3/2/6/132695582/topozalimopekup_vepulod_buwesijebeloxus_xiwenu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6406/5174/files/26012661183.pdf
    • https://cdn.shopify.com/s/files/1/0435/2727/4645/files/sds_page_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0431/2167/2356/files/lojasoputekipa.pdf
    • https://cdn.shopify.com/s/files/1/0430/3332/9817/files/13209280164.pdf
    • https://cdn.shopify.com/s/files/1/0435/7632/8355/files/49885799005.pdf
    • https://cdn.shopify.com/s/files/1/0431/1190/7488/files/38649859981.pdf
    • https://cdn.shopify.com/s/files/1/0433/8325/9285/files/nlt_bible_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/7573/9553/files/eval_command_discord_bot_maker.pdf
    • https://cdn.shopify.com/s/files/1/0431/8488/1825/files/46094767350.pdf
    • https://cdn.shopify.com/s/files/1/0427/6020/8540/files/panasonic_kx_t_7633.pdf
    • https://cdn.shopify.com/s/files/1/0428/8865/9100/files/le_barycentre_dans_le_plan.pdf
    • https://cdn.shopify.com/s/files/1/0435/3327/1191/files/68153734682.pdf
    • https://cdn.shopify.com/s/files/1/0432/7315/8806/files/xegififofubitufedebazuxus.pdf
    • https://cdn.shopify.com/s/files/1/0434/3575/3639/files/69142314596.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_off00008b8f.bin
2b13cc8e6c1acb5ff43a7af9565b5800197f38070a57ba04ee6b9508d41aa5d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B8F 5236 bytes
font_01_sfnt_off00009d64.bin
7bb50c67a4dd2bbf892fc33d5f9001a130e464ee4132680ce0fb8250f73659f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D64 10404 bytes

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