Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbb94119e87d9f02…

MALICIOUS

PDF

45.2 KB Created: 2020-08-10 04:41:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 37867b69bcfcd7be581fcffa5ac1f083 SHA-1: ebad06b89c865b22f75585e7f3ec523d01ee59d4 SHA-256: cbb94119e87d9f0211caa7b9135f2d72c09adfeaf8c309b6b4d6d5086d29725f
152 Risk Score

Malware Insights

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

The PDF was flagged as malicious by a critical heuristic due to its inclusion of a link to a known malicious redirector, ttraffic.cc. Additionally, it contains a large number of external links, many pointing to Shopify domains, suggesting an attempt at SEO manipulation or link farming. The document body, though heavily obfuscated, contains the string 'bluej programs pdf download' and the malicious URL, indicating a potential lure for users seeking specific content.

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.cc/pify?keyword=bluej+programs+pdf+download
    • http://wobeze.imaginebetter.shop/uploads/1/3/1/4/131482975/9ab66e.pdf
    • http://files.keithreganofficial.com/uploads/1/3/0/7/130739978/baa73dff02db.pdf
    • http://files.theaffairseries.com/uploads/1/3/0/9/130969057/076e61ac4cbcff5.pdf
    • http://files.nhsoulstudies.com/uploads/1/3/1/8/131856330/6672686.pdf
    • http://files.lilyenvironmental.com/uploads/1/3/1/4/131483386/lefasodimur-tidanag-vorokarelivavu-jejakewiki.pdf
    • https://cdn.shopify.com/s/files/1/0429/8794/6133/files/27430378281.pdf
    • https://cdn.shopify.com/s/files/1/0428/2197/6220/files/8403972655.pdf
    • https://cdn.shopify.com/s/files/1/0430/0341/2633/files/precalculus_with_limits_a_graphing_approach_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0439/4024/9755/files/cracking_the_pm_interview_github.pdf
    • https://cdn.shopify.com/s/files/1/0434/2530/0647/files/jafuvujetifimobofafav.pdf
    • https://cdn.shopify.com/s/files/1/0435/1816/5146/files/fool_on_the_hill_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0440/5759/1960/files/xekokozifowegorasudamufiv.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/65035647553.pdf
    • https://cdn.shopify.com/s/files/1/0432/7519/0430/files/livro_palavras_cruzadas_coquetel_para_imprimir_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0433/6680/9765/files/soda_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/2418/7555/files/ainsi_va_la_vie_de_femi_osofisan.pdf
    • https://cdn.shopify.com/s/files/1/0431/7983/5547/files/4855786189.pdf
    • https://cdn.shopify.com/s/files/1/0429/5219/6249/files/34632150222.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_off000070eb.bin
462bebf1b824b5ec192bee62a515e2dcc950e1a7112b5761fba35e4923b0be24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70EB 5576 bytes
font_01_sfnt_off000083e9.bin
e56684d9b85fd32c61aba1b58aa0435cddb7676a2489c23b38ed6f8eb06fb831		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83E9 10376 bytes

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