Malicious PDF — malware analysis report

Static analysis result for SHA-256 55717735ac3c64c4…

MALICIOUS

PDF

45.0 KB Created: 2020-08-10 17:10:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1fb18de6e8951caebfcf706c355a8fd7 SHA-1: c6ecfbc46e0d303e1669eac1709ae09391051784 SHA-256: 55717735ac3c64c43ab817151cc0b80b9c6196b3b39a9e8a4670bfdfaa77e4ba
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting a lure to trick users into clicking on malicious links. The ML classifier also strongly indicated maliciousness.

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=baroque+guitar+music+pdf
    • http://files.gumsaan.com/uploads/1/3/1/6/131637385/rubexowidoxadid.pdf
    • http://files.oakparktheatre.org/uploads/1/3/1/1/131164251/pifaxobaxujale-kojeramufubu-lurebepa.pdf
    • http://files.fnmiec.ca/uploads/1/3/0/9/130969710/7682567.pdf
    • http://files.tactdrama.com/uploads/1/3/1/3/131398184/ddee889710029.pdf
    • http://files.tactdram
    • https://cdn.shopify.com/s/files/1/0429/5337/5897/files/fipufagorijotifopatebovar.pdf
    • https://cdn.shopify.com/s/files/1/0437/0425/4615/files/infeccion_por_acinetobacter_baumannii.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/53666120985.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/banobigi.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/bowegafazupumu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3608/1308/files/bi_monthly_vs_semi_monthly.pdf
    • https://cdn.shopify.com/s/files/1/0435/9494/0573/files/linusokamaropexigidaz.pdf
    • https://cdn.shopify.com/s/files/1/0434/4827/1000/files/siwuvok.pdf
    • https://cdn.shopify.com/s/files/1/0440/8007/0821/files/likojulowazizagi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jedufejaselikaruratemop.pdf
    • https://cdn.shopify.com/s/files/1/0430/3080/6679/files/25557951527.pdf
    • https://cdn.shopify.com/s/files/1/0439/7717/9294/files/primary_school_books_free_download_bangladesh.pdf
    • https://cdn.shopify.com/s/files/1/0428/1712/6563/files/fitawafizikorilajarumivo.pdf
    • https://cdn.shopify.com/s/files/1/0439/1400/2587/files/aditya_birla_health_insurance_hospital_list.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_off00007148.bin
5d27ebcf0d5cc4d99db46b4913d01a94b28b422a56ec785f15a07807325eb6ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7148 5620 bytes
font_01_sfnt_off00008450.bin
72426756a1bb7cb94b39d1d5cbcfdf22a231c8e70ee58ab5fbbc817916b7c80f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8450 10032 bytes

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